CASIO RANGEMAN GW9400 - Master of G - Land Manual

Applications

The built-in sensors of this watch measure direction, barometric pressure, temperature and altitude. Measured values are then shown on the display. Such features make this watch useful when hiking, mountain climbing, or when engaging in other such outdoor activities.

• The measurement functions built into this watch are not intended for taking measurements that require professional or industrial precision. Values produced by this watch should be considered as reasonable representations only.
• When engaging in mountain climbing or other activities in which losing your way can create a dangerous or life-threatening situation, always use a second compass to confi rm direction readings.
• Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss suffered by you or any third party arising through the use of this product or its malfunction.

• Your watch's Altimeter Mode calculates relative altitude based on changes in barometric pressure measurement by its pressure sensor.
• Immediately before embarking or otherwise taking altitude readings, be sure to specify a reference altitude. If you don't the readings produced by the watch probably will not be very accurate. For more information, see "To specify a reference altitude value".

About This Manual

• Depending on the model of your watch, digital display text appears either as dark fi gures on a light background, or light fi gures on a dark background. All examples in this manual are shown using dark fi gures on a light background.
• Button operations are indicated using the letters shown in the illustration.
• Note that the product illustrations in this manual are intended for reference only, and so the actual product may appear somewhat different than depicted by an illustration.

Things to check before using the watch

1. Check the battery power level.
   

• The watch may enter a sleep state if its face is blocked by your sleeve even only partially.

Leaving the watch in bright light for charging can cause it to become quite hot. Take care when handling the watch to avoid burn injury. The watch can become particularly hot when exposed to the following conditions for long periods.

• On the dashboard of a car parked in direct sunlight
• Too close to an incandescent lamp
• Under direct sunlight

• Allowing the watch to become very hot can cause its liquid crystal display to black out. The appearance of the LCD should become normal again when the watch returns to a lower temperature.
• Turn on the watch's Power Saving function and keep it in an area normally exposed to bright light when storing it for long periods. This helps to ensure that power does not run down.
• Storing the watch for long periods in an area where there is no light or wearing it in such a way that it is blocked from exposure to light can cause power to run down. Expose the watch to bright light whenever possible.

Power Levels

You can get an idea of the watch's power level by observing the battery power indicator on the display.

• If low battery power is indicated, expose the face of the watch to direct light to charge. At Level 5, the battery is dead, which causes watch functions to stop, all data in watch memory to be deleted, and all watch settings to return to their initial factory defaults.

• The flashing LOW indicator at Level 3 (L) tells you that battery power is very low, and that exposure to bright light for charging is required as soon as possible.
• Display indicators reappear as soon as the battery is charged from Level 5 to Level 2 (M).
• Leaving the watch exposed to direct sunlight or some other very strong light source can cause the battery power indicator to show a reading temporarily that is higher than the actual battery level. The correct battery level should be indicated after a few minutes.

Power Recovery Mode

• Performing multiple sensor, illumination, or beeper operations during a short period may cause all of the battery power indicators (H, M, and L) to start flashing on the display. This indicates that the watch is in the power recovery mode. Illumination, alarm, countdown timer alarm, hourly time signal, and sensor operations will be disabled until battery power recovers.
• Battery power will recover in about 15 minutes. At this time, the battery power indicators (H, M, L) will stop flashing. This indicates that the functions listed above are enabled again.
• If all of the battery power indicators (H, M, L) are fl ashing and the CHG (charge) indicator also is flashing, it means the battery level is very low. Expose the watch to bright light as soon as possible.
• Even if battery power is at Level 1 (H) or Level 2 (M), the Digital Compass Mode, Barometer/ Thermometer Mode, or Altimeter Mode sensor may be disabled if there is not enough voltage available to power it suffi ciently. This is indicated when all of the battery power indicators (H, M, L) are flashing.
• Frequent flashing of all of the battery power indicators (H, M, L) probably means that remaining battery power is low. Leave the watch in bright light to allow it to charge.

Charging Times

Exposure Level (Brightness)	Daily Operation *1	Level Change *2
		Level 5	Level 4	Level 3	Level 2	Level 1
Outdoor sunlight (50,000 lux)	5 min.	2 hours			16 hours	5 hours
Sunlight through a window (10,000 lux)	24 min.	7 hours			79 hours	22 hours
Daylight through a window on a cloudy day (5,000 lux)	48 min.	12 hours			160 hours	43 hours
Indoor fl uorescent lighting (500 lux)	8 hours	175 hours			– – –	– – –

*1 Approximate amount of exposure time required each day to generate enough power for normal daily operation.
*2 Approximate amount of exposure time (in hours) required to take power from one level to the next.

• The above exposure times all are for reference only. Actual exposure times depend on lighting conditions.
• For details about the operating time and daily operating conditions, see the "Power Supply" section of the Specifications.

Power Saving When turned on, Power Saving enters a sleep state automatically whenever the watch is left for a certain period in an area where it is dark. The table below shows how watch functions are affected by Power Saving.

• For information about enabling and disabling power saving, see "To turn Power Saving on or off".
• There actually are two sleep state levels: "display sleep" and "function sleep".

Elapsed Time in Dark	Display	Operation
60 to 70 minutes (display sleep)	Blank, with PS flashing	Display is off, but all functions are enabled.
6 or 7 days (function sleep)	Blank, with PS not flashing	All functions are disabled, but timekeeping is maintained.

• The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is already in a sleep state when 6:00 AM arrives, however, it will remain in the sleep state.
• Power Saving is enabled only when the watch is in the Timekeeping Mode with the Day of the Week screen displayed or in the World Time Mode.

To recover from the sleep state
Move the watch to a well-lit area, press any button, or angle the watch towards your face for reading.

Radio Controlled Atomic Timekeeping

This watch receives a time calibration signal and updates its time setting accordingly. However, when using the watch outside of areas covered by time calibration signals, you will have to adjust the settings manually as required. See "Configuring Current Time and Date Settings Manually" for more information.

This section explains how the watch updates its time settings when the city code selected as the Home City is in Japan, North America, Europe, or China, and is one that supports time calibration signal reception.

If your Home City Code setting is this:	The watch can receive the signal from the transmitter located here:
LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW	Anthorn (England), Mainfl ingen (Germany)
HKG, BJS	Shangqiu City (China)
TPE, SEL, TYO	Fukushima (Japan), Fukuoka/Saga (Japan)
HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, NYC, YHZ, YYT	Fort Collins, Colorado (United States)

• The areas covered by MOW, HNL and ANC are quite far from the calibration signal transmitters, so certain conditions may cause reception problems.
• When HKG or BJS is selected as the Home City, only the time and date are adjusted according to the time calibration signal. You need to switch manually between standard time and daylight saving time (DST) if required. See "To configure Home City and summer time settings" for information about how to do this.

Approximate Reception Ranges

• Even when the watch is within range of a transmitter, signal reception may be impossible due to the effects of geographic contours, structures, weather, the time of year, the time of day, radio interference, etc. The signal becomes weaker at distances of approximately 500 kilometers, which means that the infl uence of the conditions listed above becomes even greater.
• Signal reception may not be possible at the distances noted below during certain times of the year or day. Radio interference may also cause problems with reception. Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers (310 miles) Fort Collins (United States) transmitter: 600 miles (1,000 kilometers) Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles) Shangqiu (China) transmitter: 500 kilometers (310 miles)
• As of December 2012, China does not use Daylight Saving Time (DST). If China does go to the Daylight Saving Time system in the future, some functions of this watch may no longer operate correctly.

To get ready for a receive operation

1. Confirm that the watch is in the Timekeeping Mode or World Time Mode.
   If it isn't, use to enter the Timekeeping Mode or World Time Mode.
2. The antenna of this watch is located on its 12 o'clock side.
   Position the watch with 12 o'clock facing towards a window as shown in the nearby illustration. Make sure there are no metal objects nearby.
   

• Signal reception normally is better at night.
• The receive operation takes from two to ten minutes, but in some cases it can take as long as 20 minutes. Take care that you do not perform any button operation or move the watch during this time.

• Signal reception may be difficult or even impossible under the conditions described below.
  

• You can use the procedure under "To turn auto receive on and off" to enable or disable auto receive.

To perform manual receive

• If the current reception fails but a previous reception (within the last 24 hours) was successful, the display shows the receiving indicator and the ERR indicator. If the ERR indicator only is displayed (without the receiving indicator), it means that all of the receive operations over the past 24 hours have failed. The watch will return to the Timekeeping Mode without changing the time setting if you press or if you do not perform any button operation for about two or three minutes.
  

Note

• You can interrupt a time calibration signal reception operation by pressing any button.

Signal Level Indicator

During manual receive, the signal level indicator displays the signal level as shown below.

The level indication will change in accordance with reception conditions while reception is being performed. As you watch the indicator, keep the watch in a location that best maintains stable reception.

• Even under optimum reception conditions, it can take about 10 seconds for reception to stabilize.
• Note that weather, the time of day, surroundings, and other factors all can affect reception.

To check the latest signal reception results
Enter the Receive Mode.

• When receive is successful, the display shows the time and date that receive was successful. -: - - indicates that none of the reception operations were successful.
• To return to the Timekeeping Mode, press .

Radio-controlled Atomic Timekeeping Precautions

• Strong electrostatic charge can result in the wrong time setting.
• Even if a receive operation is successful, certain conditions can cause the time setting to be off by up to one second.
• The watch is designed to update the date and day of the week automatically for the period January 1, 2000 to December 31, 2099. Updating of the date by signal reception will no longer be performed starting from January 1, 2100.
• If you are in an area where signal reception is not possible, the watch keeps time with the precision noted in "Specifications".
• The receive operation is disabled under any of the following conditions.
  • While power is at Level 3 (L) or lower
  • While the watch is in the power recovery mode
  • While a direction, barometric pressure/temperature, or altitude reading operation is in progress
  • When the watch is in the function sleep state ("Power Saving")
  • While the barometric pressure change indicator is displayed
  • While a countdown timer operation is in progress.
• A receive operation is cancelled if an alarm sounds while it is being performed.
• The Home City setting reverts to the initial default of TYO (Tokyo) whenever the battery power level drops to Level 5 or when you have the rechargeable battery replaced. If this happens, change the Home City to the setting you want.

Mode Reference Guide

Your watch has 11 "modes". The mode you should select depends on what you want to do.

Selecting a Mode

• The illustration below shows which buttons you need to press to navigate between modes.
• To return to the Timekeeping Mode from any other mode, hold down for about two seconds.
• In the Timekeeping Mode, press to enter the Stopwatch Mode.

• This watch has three "sensor modes": Altimeter Mode, Digital Compass Mode, and Barometer/ Thermometer Mode. Press thebutton to display a sensor mode screen.
• The sensor mode that was displayed when you last returned to the Timekeeping Mode will appear first.

General Functions (All Modes)

The functions and operations described in this section can be used in all of the modes.

Auto Return Features

• The watch will automatically return to the Timekeeping Mode if you do not perform any button operation for a particular amount of time in each mode.

Mode Name	Approximate Elapsed Time
Sunrise/Sunset, Data Recall, Alarm, Receive, Digital Compass	3 minutes
Altimeter	1 hour minimum 12 hours maximum
Barometer/Thermometer	1 hour
Setting screen (digital setting flashing)	3 minutes

• If you leave a screen with flashing digits on the display for two or three minutes without performing any operation, the watch exits the setting screen automatically.

Initial Screens
When you enter the Data Recall, Alarm, World Time, or Digital Compass Mode, the data you were viewing when you last exited the mode appears first.

Scrolling The and buttons are used on the setting screen to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.

Timekeeping

Use the Timekeeping Mode (TIME) to set and view the current time and date.

• Each press of in the Timekeeping Mode will change screen contents as shown below.
  

Configuring Home City Settings

There are two Home City settings: actually selecting the Home City and selecting either standard time or daylight saving time (DST).

To configure Home City and summer time settings

1. In the Timekeeping Mode, hold down for at least two seconds. SET and Hold will appear on the display first, and then Hold will disappear. Release after Hold disappears.

• The watch will exit the setting mode automatically if you do not perform any operation for about two or three minutes.
• For details about city codes, see the "City Code Table" at the back of this manual.

2. Use (East) and (West) to scroll through the available city codes.

• Keep scrolling until the city code you want to select as your Home City is displayed.

3. Press to display the DST setting screen.
4. Use to cycle through the DST settings in the sequence shown below.
   

• The Auto DST (AUTO) setting will be available only when a city code that supports time calibration signal reception is selected as the Home City. While Auto DST is selected the DST setting will be changed automatically in accordance with time calibration signal data.
• Note that you cannot switch between standard time and daylight saving time (DST) while UTC is selected as your Home City.

5. After all of the settings are the way you want, press twice to exit the setting screen.

• Daylight Saving Time is turned on when the DST indicator is on the display.

Note

• After you specify a city code, the watch will use UTC* offsets in the World Time Mode to calculate the current time for other time zones based on the current time in your Home City.
  * Coordinated Universal Time, the world-wide scientifi c standard of timekeeping. The reference point for UTC is Greenwich, England.
• Selecting some city codes automatically makes it possible for the watch to receive the time calibration signal for the corresponding area.

Configuring Current Time and Date Settings Manually

You can configure current time and date settings manually when the watch is unable to receive a time calibration signal.

• Before configuring current time and date settings, be sure set your Home City.

To change the current time and date settings manually

1. In the Timekeeping Mode, hold down for at least two seconds. SET and Hold will appear on the display first, and then Hold will disappear. Release after Hold disappears.
2. Press to move the flashing in the sequence shown below to select the other settings.
   

3. When the timekeeping setting you want to change is fl ashing, use A and/or C to change it as described below.

Screen	To do this:	Do this:
	Toggle between 12-hour (12H) and 24-hour (24H) timekeeping.	Press
	Reset the seconds to 00 (If the current seconds count is between 30 and 59, one is added to the minute count).	Press
	Change the hour or minutes
	Change the year, month, or day	Use (+) and (–).

4. After all of the settings are the way you want, press twice to exit the setting screen.

Note

• While the 12-hour format is selected for timekeeping, a P (PM) indicator will appear for times from noon to 11:59 p.m. No indicator appears for times from midnight to 11:59 a.m. With 24-hour format, time is displayed from 0:00 to 23:59, without any P (PM) indicator.
• The watch's built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch's rechargeable battery replaced or after power drops to Level 5.
• The day of the week changes automatically when the date changes.

Specifying Temperature, Barometric Pressure, and Altitude Display Units

Use the procedure below to specify the temperature, barometric pressure, and altitude display units to be used in the Barometer/Thermometer Mode and the Altimeter Mode.

• When TYO (Tokyo) is selected as the Home City, the altitude unit is set automatically to meters (m), the barometric pressure unit to hectopascals (hPa), and the temperature unit to Celsius (°C). These settings cannot be changed.

To specify temperature, barometric pressure, and altitude display units

1. In the Timekeeping Mode, hold down for at least two seconds. SET and Hold will appear on the display first, and then Hold will disappear. Release after Hold disappears.

2. Press as many times as necessary until UNIT appears on the display.
3. Perform the operations below to specify the display units you want.

To specify this unit:	Press this key:	To toggle between these settings:
Altitude		m (meters) and ft (feet)
Barometric Pressure		hPa (hectopascals) and inHg (inches of mercury)
Temperature		°C (Celsius) and °F (Fahrenheit)

4. After all of the settings are the way you want, press twice to exit the setting screen.

Using the Altimeter Mode

The watch takes altitude readings and displays results based on air pressure measurements taken by a built-in pressure sensor. It also saves various types of altitude records and data.

Getting Ready

Before actually taking an altitude reading you need to select an altitude screen format and select an altitude reading interval.

Selecting the Altitude Screen Format

You can select either of two screen formats for the Altimeter Mode.

• Altitude tendency graph contents are updated each time you take an altitude reading.
• To take readings of the difference between the altitude at your current location and the altitude at a reference point, select Screen 2. See "Using an Altitude Differential Value" for more information.

To select the altitude auto reading interval

1. In the Altimeter Mode, hold down for at least two seconds. You can release after ALTI appears.

• The current altitude reading value will appear at this time.

2. Press to display the current altitude auto reading interval setting.

• The display will show 0'05 or 2'00.

3. Press A to toggle the altitude auto reading interval setting between 0'05 and 2'00.
4. Press to exit the setting screen.

Taking Altitude Readings

Use the procedure below to take basic altitude readings.

• See "Using Reference Altitude Values" for information about how to make altimeter readings more accurate.
• See "How does the altimeter work?" for information about how the watch measures altitude.

To take altitude readings

Enter the Altimeter Mode.

• This will automatically start an altitude reading operation, and the result will appear on the display as a value in 1-meter (5-foot) units.
• Readings will continue to be taken about every second for the first three minutes.
• You can restart the reading operation from the beginning at any time by pressing .

Note

• After you are finished, press to return to the Timekeeping Mode and stop auto altimeter readings.
• The watch will return to the Timekeeping Mode automatically if you do not perform any operation.
• The measurement range for altitude is –700 to 10,000 meters (–2,300 to 32,800 feet).
• The displayed altitude value changes to - - - - if an altitude reading falls outside the measurement range. An altitude value will reappear as soon as the altitude reading is within the allowable range.
• Normally, displayed altitude values are based on the watch's preset conversion values. You also can specify a reference altitude value, if you want. See "Using Reference Altitude Values".
• You can change the unit for displayed altitude values to either meters (m) or feet (ft). See "To specify temperature, barometric pressure, and altitude display units".

Checking the Latest Changes in Altitude

• The altitude differential graph shows the difference between the currently displayed altitude reading and the previous reading during while readings are being taken automatically.
  

• The altitude tendency graph shows changes in altitude over the past 20 readings while readings are being taken automatically.
  

Advanced Altimeter Mode Operations

Use the information in this section to obtain more accurate altimeter readings, especially while mountain climbing or trekking.

Using an Altitude Differential Value

The Altimeter Mode screen has an altitude differential value that shows the change in altitude from a reference point you specify. The altitude differential value is updated each time the watch takes an altitude reading.

• The range of the altitude differential value is –3,000 meters (–9,995 feet) to 3,000 meters (9,995 feet).
• - - - is displayed in place of the altitude differential value whenever the measured value is outside the allowable range.
• See "Using the Altitude Differential Value While Mountain Climbing or Hiking" for some real-life examples of how to use this feature.

To specify the altitude differential start point

Using the Altitude Differential Value While Mountain Climbing or Hiking

After you specify the altitude differential start point while mountain climbing or hiking, you can easily measure the change in the altitude between that point and other points along the way.

To use the altitude differential value

Using Reference Altitude Values

To minimize the chance of reading error, you should update the reference altitude value before setting off on a trek or any other activity where you plan to take altitude readings. During a trek, keep checking the readings produced by the watch against altitude information provided by markers and other information, and update the reference altitude value as required.

• Reading error can be caused by changes in barometric pressure, atmospheric conditions, and elevation.
• Before performing the procedure below, look up the altitude of your current location on a map, the Internet, etc.

To specify a reference altitude value

1. In the Altimeter Mode, hold down for at least two seconds. You can release after ALTI appears.

• The current altitude reading value will appear at this time.

2. Use (+) or (–) to change the current reference altitude value in 1-meter (5-foot) increments.

• Change the reference altitude value to an accurate altitude reading that you get from a map or other source.
• You can set the reference altitude value within the range of –10,000 to 10,000 meters (–32,800 to 32,800 feet).
• Pressing and at the same time returns to OFF (no reference altitude value), so the watch performs air pressure to altitude conversions based on preset data only.

3. Press to exit the setting screen.

1. In the Altimeter Mode, hold for at least two seconds.

• REC and Hold will appear on the display first, and then Hold will disappear. Release after Hold disappears.
• The watch will create a record of the current altitude reading along with the date and time, and then return automatically to the altitude reading screen.

2. To view a record, enter the Data Recall Mode and use the A and C buttons to scroll. See "Viewing Memory Records" for more information.

Auto Save Values
The watch automatically keeps track of the four types of values below, and updates them as required along with the time and date of the reading.
High Altitude (MAX)
Low Altitude (MIN)
Cumulative Ascent (ASC)
Cumulative Descent (DSC)

• For information about viewing these values, see "Viewing Memory Records".
• These values are checked and updated automatically by the watch as altitude auto measurements are taken. You can change the auto save interval, if you want.
• Auto save is performed only while the watch is in the Altimeter Mode.

How Cumulative Ascent and Cumulative Descent Values Are Updated

The total ascent and total descent values produced by an Altimeter Mode reading operation session during the example climb illustrated above are calculated as follows.
Total Ascent: (300 m) + (620 m) = 920 m
Total Descent: (320 m) + (500 m) = 820 m

• Cumulative ascent and cumulative descent values are updated whenever there is a difference of at least ±15 meters (±49 feet) from one reading to the next.
• ASC and DSC values are retained in memory without being reset even if you exit the Altimeter Mode. When you re-enter the Altimeter Mode, accumulation resumes from the value where it last stopped.

How does the altimeter work?

Generally, air pressure decrease as altitude increases. This watch bases its altitude reading on International Standard Atmosphere (ISA) values stipulated by the International Civil Aviation Organization (ICAO). These values define relationships between altitude and air pressure.

• Note that the following conditions will prevent you from obtaining accurate readings:
  When air pressure changes because of changes in the weather
  Extreme temperature changes
  When the watch itself is subjected to strong impact

There are two standard methods of expressing altitude: absolute altitude, which expresses an absolute height above sea level, and relative altitude, which expresses the difference between the altitudes of two different places. This watch expresses altitudes as relative altitude.

How the Altimeter Measures Altitude
The altimeter can measure altitude based on its own preset values (initial default method) or using a reference altitude specified by you.

When you measure altitude based on preset values
Data produced by the watch's barometric pressure sensor is converted to approximate altitude based on ISA (International Standard Atmosphere) conversion values stored in watch memory.

When you measure altitude using a reference altitude specified by you
After you specify a reference altitude, the watch uses that value to convert barometric pressure readings to altitude.

• When mountain climbing, you can specify a reference altitude value in accordance with a marker along the way or altitude information from a map. After that, the altitude readings produced by the watch will be more accurate than they would without a reference altitude value.

Altimeter Precautions

• This watch estimates altitude based on air pressure. This means that altitude readings for the same location may vary if air pressure changes.
• Do not rely upon this watch for altitude reading or perform button operations while sky diving, hang gliding, or paragliding, while riding a gyrocopter, glider, or any other aircraft, or while engaging in any other activity where there is the chance of sudden altitude changes.
• Do not use this watch for measuring altitude in applications that demand professional or industrial level precision.
• Remember that the air inside of a commercial aircraft is pressurized. Because of this, the readings produced by this watch will not match the altitude readings announced or indicated by the fl ight crew.

Precautions Concerning Simultaneous Altitude and Temperature Readings

For the more accurate altitude readings, leaving the watch on your wrist is recommended in order to maintain the watch at a constant temperature.

• When taking temperature readings, keep the watch at as stable a temperature as possible. Changes in temperature can affect temperature readings. See product specifications for sensor accuracy information.

2. During the approximately 60 seconds that the above reading operation is in progress, point 12 o'clock on the watch in the direction of the bearing you want to read.

• About one second later, the direction and bearing to your objective will appear on the display.
• If 60 seconds elapse before you can take a bearing reading, press to restart the direction reading operation.
  

Example: Positioning a map in accordance with actual surroundings (setting a map)
You can align a map with the northerly direction indicated by the watch, and then compare what is shown on the map with your actual surroundings. This is helpful for checking your current location and the location of your objective. This process is called "setting a map".

Saving a Bearing (Bearing Memory)
You can save the bearing to a particular destination in bearing memory and use it to ensure you are headed in the correct direction.

1. While the direction and bearing to your objectiveare displayed, press .
   

• This saves the objective information in bearing memory, and displays it as shown below. Now, any time you are in the Digital Compass Mode, you can check the objective information currently stored in bearing memory.

2. To return to direction (north, south, east, west) indication, press to delete bearing memory contents.
   Example: Advancing to an objective while monitoring your bearing Even if you lose sight of your objective, you can use a map to store the required bearing in bearing memory and refer to the memorized information to advance to your objective.

Magnetic Declination Correction

With magnetic declination correction, you input a magnetic declination angle (difference between magnetic north and true north), which allows the watch to indicate true north. You can perform this procedure when the magnetic declination angle is indicated on the map you are using. Note that you can input the declination angle in whole degree units only, so you may need to round off the value specifi ed on the map. If your map indicates the declination angle as 7.4°, you should input 7°. In the case of 7.6° input 8°, for 7.5° you can input 7° or 8°.

To perform magnetic declination correction

The northerly direction can be expressed either as magnetic north or true north, which are different from each other. Also, it is important to keep in mind that magnetic north moves over time.

• Magnetic north is the north that is indicated by the needle of a compass.
• True north, which is the location of the North Pole of the Earth's axis, is the north that is normally indicated on maps.
• The difference between magnetic north and true north is called the "declination". The closer you get to the North Pole, the greater the declination angle.

Location

• Taking a direction reading when you are near a source of strong magnetism can cause large errors in readings. Because of this, you should avoid taking direction readings while in the vicinity of the following types of objects: permanent magnets (magnetic necklaces, etc.), concentrations of metal (metal doors, lockers, etc.), high tension wires, aerial wires, household appliances (TVs, personal computers, washing machines, freezers, etc.).
• Accurate direction readings are impossible while in a train, boat, air plane, etc.
• Accurate readings are also impossible indoors, especially inside ferroconcrete structures. This is because the metal framework of such structures picks up magnetism from appliances, etc.

Storage

• The precision of the bearing sensor may deteriorate if the watch becomes magnetized. Because of this, you should store the watch away from magnets or any other sources of strong magnetism, including: permanent magnets (magnetic necklaces, etc.) and household appliances (TVs, personal computers, washing machines, freezers, etc.).
• Whenever you suspect that the watch may have become magnetized, perform the procedure under "To perform 2-point calibration".

Taking Barometric Pressure and Temperature Readings

This watch uses a pressure sensor to measure air pressure (barometric pressure) and a temperature sensor to measure temperature.

To take barometric pressure and temperature readings
Enter the Barometer/Thermometer Mode.

• This will automatically start a barometric pressure/temperature reading operation, and the results will appear on the display in about one second.
• Readings will continue to be taken about every fi ve seconds for the fi rst three minutes, and then about every two minutes thereafter.
• You can restart the reading operation from the beginning at any time by pressing .

Note

• Press to return to the Timekeeping Mode.
• The watch will return to the Timekeeping Mode automatically if you do not perform any operation for about 1 hour after entering the Barometer/Thermometer Mode.

Barometric Pressure

• Barometric pressure is displayed in units of 1 hPa (or 0.05 inHg).
• The displayed barometric pressure value changes to - - - if a measured barometric pressure falls outside the range of 260 hPa to 1,100 hPa (7.65 inHg to 32.45 inHg). The barometric pressure value will reappear as soon as the measured barometric pressure is within the allowable range.

Temperature

• Temperature is displayed in units of 0.1°C (or 0.2°F).
• The displayed temperature value changes to - - - °C (or °F) if a measured temperature falls outside the range of –10.0°C to 60.0°C (14.0°F to 140.0°F). The temperature value will reappear as soon as the measured temperature is within the allowable range.

Reading the Barometric Pressure Graph

The barometric pressure graph shows a chronological history of pressure readings.

• When display of the barometric change indicator is disabled, the graph shows the results of up to 21 barometric pressure readings (42 hours).
• When display of the barometric change indicator is enabled, the graph shows the results of up to 11 barometric pressure readings (22 hours).
  

• The horizontal axis of the graph represents time, with each dot standing for two hours. The rightmost dot represents the most recent reading.
• The vertical axis of the graph represents barometric pressure, with each dot standing for the relative difference between its reading and that of the dots next to it. Each dot represents 1 hPa.

Note

• If there are sudden changes in weather or temperature, the graph line of past reading may run off the top or bottom of the display. The entire graph will become visible once barometric conditions stabilize.
  
• The following conditions cause the barometric pressure reading to be skipped, with the corresponding point on the barometric pressure graph being left blank.
  • Barometric reading that is out of range (260 hPa to 1,100 hPa or 7.65 inHg to 32.45 inHg)
  • Sensor malfunction

Barometric Pressure Differential Pointer

This pointer indicates the relative difference between the most recent barometric pressure reading indicated on the barometric pressure graph, and the current barometric pressure value displayed in the Barometer/Thermometer Mode.

Reading Barometric Pressure Differential Pointer
Pressure differential is indicated in the range of ±10 hPa, in 1-hPa units.

• The nearby illustration, for example, shows what the pointer would indicate when the calculated pressure differential is approximately – 5 hPa (approximately – 0.15 inHg).
• Barometric pressure is calculated and displayed using hPa as the standard. The barometric pressure differential also can be read in inHg units as shown in the illustration (1 hPa = 0.03 inHg).

Barometric Pressure Change Indications

Your watch analyzes past barometric pressure readings and uses a barometric pressure change indicator to inform you about changes in pressure. The watch will beep to let you know when a signifi cant change in barometric pressure is detected. This means you could start taking barometric pressure readings after reaching a lodge or camp area, and then check the watch the next morning for changes in pressure, and plan you day's activities accordingly. Note that you can enable or disable display of the barometric pressure change indicator as desired.

Reading the Barometric Pressure Change Indicator

Indicator	Meaning
	Sudden fall in pressure.
	Sudden rise in pressure.
	Sustained rise in pressure, changing to a fall.
	Sustained fall in pressure, changing to a rise.

• The barometric pressure change indicator is not displayed if there has been no noteworthy change in barometric pressure.

• Incorrectly calibrating the temperature sensor can result in incorrect readings. Carefully read the following before doing anything.
  • Compare the readings produced by the watch with those of another reliable and accurate thermometer.
  • If adjustment is required, remove the watch from your wrist and wait for 20 or 30 minutes to give the temperature of the watch time to stabilize.

To calibrate the pressure sensor and the temperature sensor

Barometer and Thermometer Precautions

• The pressure sensor built into this watch measures changes in air pressure, which you can then apply to your own weather predictions. It is not intended for use as a precision instrument in offi cial weather prediction or reporting applications.
• Sudden temperature changes can affect pressure sensor readings. Because of this, there may be some error in the readings produced by the watch.
• Temperature reading are affected by your body temperature, direct sunlight, and moisture. To achieve a more accurate temperature reading, remove the watch from your wrist, place it in a well ventilated location out of direct sunlight, and wipe all moisture from the case. It takes approximately 20 to 30 minutes for the case of the watch to reach the surrounding temperature.

Records

Checking the Current Time in a Different Time Zone

You can use the World Time Mode to view the current time in one of 31 time zones (48 cities) around the globe. The city that is currently selected in the World Time Mode is called the "World Time City".

To enter the World Time Mode
Use to select the World Time Mode (WT).

• After about one second, the city code and name of the currently selected city will scroll across the display. After that, the city code only will remain on the display.

To view the time in another time zone
In the World Time Mode, use (East) and (West) to scroll through city codes.

To specify standard time or daylight saving time (DST) for a city

1. In the World Time Mode, use (East) and (West) to scroll through the available city codes.

• Keep scrolling until the city code whose Standard Time/Daylight Saving Time setting you want to change is displayed.

2. Hold down for at least two seconds. DST and Hold will appear on the display first, and then Hold will disappear. Releaseafter Hold disappears.

• This will toggle summer time between on and off.
• The DST indicator is displayed while summer time is turned on.
• Using the World Time Mode to change the DST setting of the city code that is selected as your Home City also will change the Timekeeping Mode time DST setting.
• Note that you cannot switch between standard time/daylight saving time (DST) while UTC is selected as the World Time City.
• Note that the standard time/daylight saving time (DST) setting affects only the currently selected city. Other cities are not affected.

Using the Stopwatch

The stopwatch measures elapsed time, split times, and two finishes.

To enter the Stopwatch Mode
Use to select the Stopwatch Mode (STW).

To perform an elapsed time operation

To pause at a split time

To measure two finishes

Note

• The Stopwatch Mode can indicate elapsed time up to 999 hours, 59 minutes, 59.99 seconds.
• Once started, stopwatch timing continues until you press to stop it, even if you exit the Stopwatch Mode to another mode and even if timing reaches the stopwatch limit defined above. A paused timing operation will remain paused until you press to resume it orto reset.
• Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time and returns to elapsed time measurement.
• While SPLIT is shown in the display, it alternates with the hour digits of the split time at one-second intervals.
• You can directly access the Stopwatch Mode from the Timekeeping Mode by pressing the button. If the stopwatch is reset to all zeros when you enter the Stopwatch mode, the watch will beep twice and an elapsed time operation will start automatically. You can check whether the stopwatch is reset by looking at the Timekeeping Mode graphic.

Using the Countdown Timer

The countdown timer can be confi gured to start at a preset time, and sound an alarm when the end of the countdown is reached.

To enter the Countdown Timer Mode
Use to select the Countdown Timer Mode (TMR).

To specify the countdown start time

1. Enter the Countdown Timer Mode.

• If a countdown is in progress (indicated by the seconds counting down), press to stop it and then press to reset to the current countdown start time.
• If a countdown is paused, press to reset to the current countdown start time.

2. Hold down for at least two seconds.

• SET Hold will flash on the display and then the current start time setting will start to flash. Keep depressed until the start time setting starts to flash.

To perform a countdown timer operation

• Before starting a countdown timer operation, check to make sure that a countdown operation is not in progress (indicated by the seconds counting down). If it is, press to stop it and then to reset to the countdown start time.
• An alarm sounds for ten seconds when the end of the countdown is reached. This alarm will sound in all modes. The countdown time is reset to its starting value automatically when the alarm sounds.

To stop the alarm
Press any button.

Using the Alarm

You can set five independent daily alarms. When an alarm is turned on, an alarm will sound for about 10 seconds each day when the time in the Timekeeping Mode reaches the preset alarm time. This is true even if the watch is not in the Timekeeping Mode. One of the daily alarms is a snooze alarm. The other four are one-time alarms. The snooze alarm will sound every five minutes up to seven times or until it is turned off. You can also turn on an Hourly Time Signal, which will cause the watch to beep twice every hour on the hour.

To enter the Alarm Mode
Use to select the Alarm Mode (ALM).

• The alarm name indicates an alarm screen. SIG is shown when the Hourly Time Signal screen is on the display.
• When you enter the Alarm Mode, the data you were viewing when you last exited the mode appears fi rst.

To set an alarm time

To turn an alarm and the Hourly Time Signal on and off

To stop the alarm
Press any button.

Note

• The snooze alarm sounds up to seven times at intervals of about fi ve minutes.
• After the snooze alarm fi rst sounds, SNZ will fl ash on the display until the snooze alarm sounds all seven times or until it is canceled.
• The snooze alarm will be canceled when any of the following occurs while the SNZ indicator is fl ashing on the display.
  • If you turn off the snooze alarm
  • If you display the snooze alarm setting screen
  • If you display the Timekeeping Mode setting screen
  • If your Home City and World Time City are the same city, and you use the World Time Mode to change the summer time setting of your Home City

Looking up Sunrise and Sunset Times

You can use the Sunrise/Sunset Mode to look up the sunrise and sunset times for a particular date (year, month, day) and location.

To view sunrise and sunset times
Use to select the Sunrise/Sunset Mode (SUN).

• This will display the sunrise and sunset times for the current date based the currently specified city code, latitude, and longitude.
• Sunrise/sunset times will not be displayed when battery power is low.
• Before trying to use the Sunrise/Sunset Mode, you need to configure settings for the city code, longitude, and latitude for the location whose sunrise and sunset times you want to view.
• The factory default confi guration of the location is: City Code: TYO (Tokyo); Latitude: North 35.7 degrees; Longitude: East 139.7 degrees.

To view the sunrise/sunset time for a particular date

Illumination

The display of the watch is illuminated for easy reading in the dark. The watch's auto light switch turns on illumination automatically when you angle the watch towards your face.

• The auto light switch must be turned on for it to operate.

To turn on illumination manually

Pressin any mode to illuminate the display.

• You can use the procedure below to select either 1.5 seconds or three seconds as the illumination duration. When you press, the display will remain illuminated for about 1.5 seconds or three seconds, depending on the current illumination duration setting.
• The above operation turns on illumination regardless of the current auto light switch setting.
• Illumination is disabled during time calibration signal reception, while confi guring sensor measurement mode settings, and during bearing sensor calibration.

Note

• This watch features a "Full Auto Light", so the auto light switch operates only when available light is below a certain level. It does not illuminate the display under bright light.
• The auto light switch is always disabled, regardless of its on/off setting, when any one of the following conditions exists.
  While an alarm is sounding
  While a bearing sensor calibration operation is being performed in the Digital Compass Mode
  While a receive operation is in progress in the Receive Mode
  While a sunrise or sunset time is being calculated While in a sensor mode, an auto light switch operation is performed after a sensor reading

To turn the auto light switch on and off

In the Timekeeping Mode, hold down for at least three seconds to toggle the auto light switch on (LT displayed) and off (LT not displayed).

• The auto light switch turns off automatically whenever battery power drops to Level 4.

Illumination Precautions

• The LED that provides illumination loses power after very long use.
• Illumination may be hard to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.

Auto light switch precautions

• Wearing the watch on the inside of your wrist, movement of your arm, or vibration of your arm can cause frequent activation of the auto light switch and illumination of the display. To avoid running down the battery, turn off the auto light switch whenever engaging in activities that might cause frequent illumination of the display.
• Note that wearing the watch under your sleeve while the auto light switch is turned on can cause frequent illumination of the display and can run down the battery.
  
• Illumination may not turn on if the face of the watch is more than 15 degrees above or below parallel. Make sure that the back of your hand is parallel to the ground.
• Illumination turns off after the preset illumination duration, even if you keep the watch pointed towards your face.
• Static electricity or magnetic force can interfere with proper operation of the auto light switch. If illumination does not turn on, try moving the watch back to the starting position (parallel with the ground) and then tilt it back towards your face again. If this does not work, drop your arm all the way down so it hangs at your side, and then bring it back up again.
• You may notice a very faint clicking sound coming from the watch when it is shaken back and forth. This sound is caused by mechanical operation of the auto light switch, and does not indicate a problem with the watch.

Power Saving

To turn Power Saving on or off

Troubleshooting

Time Setting

See "Radio Controlled Atomic Timekeeping" for information about adjusting the time setting according to a time calibration signal.

• The current time setting is off by hours.
  Your Home City setting may be wrong. Check your Home City setting and correct it, if necessary.
• The current time setting is off by one hour.
  If you are using the watch in an area where time calibration signal reception is possible, see "To configure Home City and summer time settings". If you are using in the watch in an area where time calibration signal reception is not possible, you may need to change your Home City's standard time/daylight saving time (DST) setting manually. Use the procedure under "To change the current time and date settings manually" to change the standard time/daylight saving time (DST) setting.

Sensor modes

• I can't change the temperature, barometric pressure, and altitude display units.
  When TYO (Tokyo) is selected as the Home City, the altitude unit is set automatically to meters (m), the barometric pressure unit to hectopascals (hPa), and the temperature unit to Celsius (°C). These settings cannot be changed.

• "ERR" appears on the display while I am using a sensor.
  Subjecting the watch to strong impact can cause sensor malfunction or improper contact of internal circuitry. When this happens, ERR (error) will appear on the display and sensor operations will be disabled.
  

• If ERR appears while a reading operation is being performed in a sensor mode, restart the operation. If ERR appears on the display again, it can mean there is something wrong with the sensor.
• If ERR keeps appearing during a reading operation, it could mean there is a problem with the applicable sensor.

• Correct altitude readings are not possible.
  Relative altitude is calculated based on changes in barometric pressure readings by the pressure sensor. To minimize the chance of reading error due to changes in barometric pressure, you should update the reference altitude value before setting off on a trek or any other activity where you plan to take altitude readings. For more information, see "To specify a reference altitude value".
• ERR appears on the display after I perform 2-point calibration.
  If - - - appears and then changes to ERR (error) on the calibration screen, it means that there is something wrong with the sensor.
• If ERR disappears after about one second, try performing the calibration again.
• If ERR keeps appearing, contact your original dealer or nearest authorized CASIO distributor to have the watch checked.
  Whenever you have a sensor malfunction, take the watch to your original dealer or nearest authorized CASIO distributor as soon as possible.
• What causes incorrect direction readings?
  • Incorrect 2-point calibration. Perform 2-point calibration.
  • Nearby source of strong magnetism, such as a household appliance, a large steel bridge, a steel beam, overhead wires, etc., or an attempt to take direction readings on a train, boat, etc. Move away from large metal objects and try again. Note that digital compass operation cannot be performed inside a train, boat, etc.

• What causes different direction readings to produce different results at the same location?
  Magnetism generated by nearby high-tension wires is interfering with detection of terrestrial magnetism. Move away from the high-tension wires and try again.
• Why am I having problems taking direction readings indoors?
  A TV, personal computer, speakers, or some other object is interfering with terrestrial magnetism readings. Move away from the object causing the interference or take the direction reading outdoors. Indoor direction readings are particularly diffi cult inside ferro-concrete structures. Remember that you will not be able to take direction readings inside of trains, airplanes, etc.
• The barometric pressure differential pointer does not appear on the display when I enter the Barometer/Thermometer Mode.
  • This could indicate sensor error. Try pressing again.
  • The barometric pressure differential pointer is not displayed when the displayed current barometric value is outside of the allowable measurement range (260 to 1,100 hPa).

World Time Mode

• The time for my World Time City is off in the World Time Mode.
  This could be due to incorrect switching between standard time and daylight saving time. See "To specify standard time or daylight saving time (DST) for a city" for more information.

Charging

• The watch does not resume operation after I expose it to light.
  This can happen after the power level drops to Level 5. Continue exposing the watch to light until the battery power indicator shows H or M.

Time Calibration Signal

The information in this section applies only when LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW, HKG, BJS, HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, NYC, YHZ, YYT, TPE, SEL, or TYO is selected as the Home City. You need to adjust the current time manually when any other city is selected as the Home City.

• The display shows the ERR indicator when I check the result of the latest receive operation.

Possible Cause	Remedy
You are wearing or moving the watch, or performing a button operation during the signal receive operation. The watch is in an area with poor reception conditions.	Keep the watch in an area where reception conditions are good while the signal receive operation is performed.
You are in an area where signal reception is not possible for some reason.	See "Approximate Reception Ranges".
The calibration signal is not being transmitted for some reason.	Check the website of the organization that maintains the time calibration signal in your area for information about its down times. Try again later.

• The current time setting changes after I set it manually.
  You may have the watch confi gured for auto receive of the time calibration signal, which will cause the time to be adjusted automatically according to your currently selected Home City. If this results in the wrong time setting, check your Home City setting and correct it, if necessary.

• The current time setting is off by one hour.

Possible Cause	Remedy
Signal reception on a day for switching between standard time/daylight saving time (DST) may have failed for some reason.	Perform the operation under "To get ready for a receive operation". The time setting will be adjusted automatically as soon as signal reception is successful. If you are unable to receive the time calibration signal, change the standard time/daylight saving time (DST) setting manually.

• Auto receive is not performed or you cannot perform manual receive.

Possible Cause	Remedy
The watch is not in the Timekeeping Mode or World Time Mode.	Auto receive is performed only while the watch is in the Timekeeping Mode or World Time Mode. Switch to either of these two modes.
Your Home City setting is wrong.	Check your Home City setting and correct it, if necessary.
There is not enough power for signal reception.	Expose the watch to light to charge it.

• Signal reception is being performed successfully, but the time and/or day is wrong.

Possible Cause	Remedy
Your Home City setting is wrong.	Check your Home City setting and correct it, if necessary.
The DST setting may be incorrect.	Change the DST setting to Auto DST.

Specifications

Accuracy at normal temperature: ±15 seconds a month (with no signal calibration)
Timekeeping: Hour, minutes, seconds, p.m. (P), year, month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Date/Time Records: Up to 40 records (shared storage with altitude, bearing, and barometric pressure/ temperature records)
Other: Two display formats (day of the week screen, barometric pressure graph screen); Home City code (can be assigned one of 48 city codes); Standard Time / Daylight Saving Time (summer time) Year display on setting screen only.

Time Calibration Signal Reception: Auto receive 6 times a day (5 times a day for the Chinese calibration signal); Remaining auto receives cancelled as soon as one is successful; Manual receive; Receive Mode
Receivable Time Calibration Signals: Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5 kHz); Anthorn, England (Call Sign: MSF, Frequency: 60.0 kHz); Fort Collins, Colorado, the United States (Call Sign: WWVB, Frequency: 60.0 kHz); Fukushima, Japan (Call Sign: JJY, Frequency: 40.0 kHz); Fukuoka/Saga, Japan (Call Sign: JJY, Frequency: 60.0 kHz); Shangqiu City, Henan Province, China (Call Sign: BPC, Frequency: 68.5 kHz)

Altimeter:
Measurement range: –700 to 10,000 m (or –2,300 to 32,800 ft.) without reference altitude
Display range: –10,000 to 10,000 m (or –32,800 to 32,800 ft.)
Negative values can be caused by readings produced based on a reference altitude or due to atmospheric conditions.
Display unit: 1 m (or 5 ft.)

Current Altitude Data: Every second for the fi rst 3 minutes, followed by every 5 seconds for approximately 1 hour (0'05); every second for the first 3 minutes, followed by every 2 minutes for approximately 12 hours (2'00)
Altitude Records: Up to 40 records (shared storage with date/time, bearing, and barometric pressure/temperature records) Historical Altitude Values: 1 record of high altitude, low altitude, cumulative ascent, cumulative descent
Other: Reference altitude setting; Altitude differential; Altitude auto reading interval (0'05 or 2'00); Altitude Differential Graph

Digital Compass: 60 seconds continuous reading; 16 directions;
Angle value 0° to 359°; Four direction pointers; Calibration (2-point); Magnetic declination correction; Bearing Memory; Bearing Records: Up to 40 records (shared storage with date/time, altitude, and barometric pressure/temperature records)

Barometer: Measurement and display range: 260 to 1,100 hPa (or 7.65 to 32.45 inHg)
Display unit: 1 hPa (or 0.05 inHg)
Reading timing: Daily from midnight, at two hour intervals (12 times per day); Every five seconds in the Barometer/Thermometer Mode Barometric Pressure/Temperature Records: Up to 40 records (shared storage with date/time, altitude, and bearing records)
Other: Calibration; Manual reading (button operation); Barometric pressure graph; Barometric pressure differential pointer; Barometric pressure change indicator

Thermometer:
Measurement and display range: –10.0 to 60.0°C (or 14.0 to 140.0°F)
Display unit: 0.1°C (or 0.2°F)
Reading timing: Every five seconds in the Barometer/Thermometer Mode
Other: Calibration; Manual reading (button operation)

Temperature Sensor Precision: ±2°C (±3.6°F) in range of –10°C to 60°C (14.0°F to 140.0°F)

Bearing Sensor Precision: Direction: Within ±10° Values are guaranteed for a temperature range of –10°C to 60°C (14°F to 140°F). North pointer: Within ±2 digital segments

Pressure Sensor Precision: Measurement accuracy: Within ±3hPa (0.1 inHg) (Altimeter accuracy: Within ± 75m (246 ft.))

• Values are guaranteed for a temperature range of –10°C to 40°C (14°F to 104°F).
• Precision is lessened by strong impact to either the watch or the sensor, and by temperature extremes.

World Time: 48 cities (31 time zones)
Other: Daylight Saving Time/Standard Time

Stopwatch:
Measuring unit: 1/100 second
Measuring capacity: 999:59' 59.99"
Measuring accuracy: ±0.0006%
Measuring modes: Elapsed time, split time, two finishes

Countdown Timer:
Measuring unit: 1 second
Countdown range: 24 hours
Setting unit: 1 minute

Alarms: 5 Daily alarms (four one-time alarms; one snooze alarm); Hourly time signal

Sunrise/sunset: Sunrise/sunset time display; selectable date

Illumination: LED light; Selectable illumination duration (approximately 1.5 seconds or 3 seconds); Auto Light Switch (Full Auto Light operates only in the dark)
Other: Battery power indicator; Power Saving; Low-temperature resistance (–10°C/14°F); Button operation tone on/off

Power Supply: Solar panel and one rechargeable battery Approximate battery operating time: 8 months (from full charge to Level 4) under the following conditions:

• Light: 1.5 seconds/day
• Beeper: 10 seconds/day
• Direction readings: 20 times/month
• Climbs: Once (approximately 1 hour of altitude readings)/month
• Barometric pressure change indicator readings: Approximately 24 hours/month
• Barometric pressure graph: Readings every 2 hours
• Time calibration signal receive: 4 minutes/day
• Display: 18 hours/day

Frequent use of illumination runs down the battery. Particular care is required when using the auto light switch.

* As of December 2012, the official UTC offset for Moscow, Russia (MOW) was changed from +3 to +4, but this watch still uses an offset of +3 (the old offset) for MOW. Because of this, you should leave the summer time setting turned on (which advances the time by one hour) for the MOW time.

• The rules governing global times (GMT differential and UTC offset) and summer time are determined by each individual country.

Documents / Resources

Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download CASIO RANGEMAN GW9400 - Master of G - Land Manual