Safety precautions Although this product was designed to be used safely, failing to use it correctly may result in an accident. To ensure safety, observe all warnings and cautions while using the product. Cautions for the headphones Do not use the product near medical equipment. Radio waves may affect cardiac pacemakers and medical electronic equipment.
Safety precautions Do not charge the product if water or foreign matter is inside the battery jack or USB charging cable. Doing so may cause corrosion, heat generation, smoke, fire, or other malfunction or electric shock in the battery jack or USB charging cable.
Notes on use Be sure to read the connected device’s user manual before use. Audio-Technica will not be liable in any way for any loss of data in the unlikely event that such losses should occur while using the product. On public transportation or in other public places, keep the volume low so as not to disturb other people.
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Notes on use If the product does not operate at all or as intended when touched, check to make sure that your other fingers, parts of your hand, or clothing items are not in contact when touching. Also, the product may not operate correctly if you are wearing gloves or if your fingertips are too dry.
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Waterproof and dustproof performance The waterproof performance of the product is designed to prevent the ingress of liquids from sweating during operation and simple washing (equivalent to IPX5). JIS/IEC protection grade IPX5 means that the headphones are protected against exposure to water jets. The headphones cannot be used in hot and humid places, such as bathrooms.
For a more comfortable Bluetooth communication experience The effective communication range of this product varies depending on obstructions and radio wave conditions. For a more enjoyable experience, please use the product as close as possible to the Bluetooth device. To minimize noise and sound disruptions, avoid placing your body or other obstacles between the product’s antenna and the Bluetooth device.
Part names and functions Headphones L/R (left/right) indicator Touch sensors Indicator lamps Display the operating status and battery level of the headphones. Microphones...
Part names and functions Charging case Cover Charging indicator lamp Lights/flashes when charging the charging case. Also displays the battery level of the charging case. Battery jack Use to connect the included USB charging cable and charge the product. Accessories ™...
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Part names and functions Removing the insulation seals Remove the insulation seals before use. Insulation seals...
Charging the battery Fully charge the battery when using for the first time. When the rechargeable battery is running low, the voice guidance will play the message “Low battery”, and the indicator lamp will flash in orange. Charge the battery as soon as possible. It takes about 2.5 hours to fully charge the headphones, and about 3 hours to fully charge the charging case.
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Charging the battery Connect the included USB charging cable (USB Type-A side) to the computer to start charging. While charging, the charging indicator lamp on the charging case lights/flashes as follows. (It may take several seconds for the charging indicator lamp to light.) Charging indicator lamp Charging indicator lamp Status...
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Charging the battery Place the headphones in the charging case. While charging, the indicator lamp lights as follows. (It may take several seconds for the indicator lamp to light.) When charging the headphones, make sure the indicator lamps on the headphones light up. If they do not light up, remove the headphones and place them in the case again.
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Charging the battery Charging indicator lamp Charging indicator lamp Status Lights in orange Battery level is low Lights in white Battery level is sufficient...
Power supply ON/OFF Turning on the product Remove the headphones from the charging case. The power will turn on automatically, and the indicator lamps will light in white and then flash. Voice guidance is played. It may take several seconds for the indicator lamp to light. See "Voice guidance"...
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Power supply ON/OFF The power will turn off automatically.
Use your Bluetooth device to begin the pairing process and search for the product. When your Bluetooth device finds the product, “ATH-CKS30TW” will be displayed on the device. For information about using your Bluetooth device, refer to the device’s user manual.
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Connecting via Bluetooth Bluetooth ATH-CKS30TW The voice guidance will play the message “Connected”. This indicates pairing was performed correctly and is now complete. Pairing with Fast Pair In one touch, the product enables quick, effortless Bluetooth pairing with your Android devices. You can even check to see where you last placed it.
Connecting via Bluetooth Touch the pairing notification that appears on your Android device. The voice guidance will play the message “Connected” when pairing is complete. About pairing When connecting a new Bluetooth device, you need to pair it with the product. Once the Bluetooth device and the product are paired, you do not need to pair them again.
Wearing the product Insert the side of the product marked “L” (left) into the left ear and the side marked “R” (right) into the right ear. When using the product, select the eartips that fit your ears best, and wear the product securely.
Touch sensors The product has touch sensors. When performing operations, touch the sensors using the pad of your finger, not the fingertip. Operate the touch sensor with one finger. Operating with a sharp-tipped object, such as a ballpoint pen or pencil, may result not only in incorrect operation, but also damage to the touch sensor.
Using the product The product can use Bluetooth wireless technology to connect to your device and play music, receive phone calls, etc. Use the product for whichever of these purposes suits your needs. Note that Audio-Technica cannot guarantee the operation of displays, such as the battery level display, or applications via Bluetooth devices. Listening to music To connect for the first time, pair the product and your device via Bluetooth wireless technology.
Using the product Operation Function Touch Starts or pauses playback. Touch (twice) Plays the next track. Touch (three times) Plays the previous track / returns to the start of the track. The controls explained above may not be available on some smartphones. L (left) side headphone touch sensor operations Touch sensor Operation...
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Using the product To end a call, touch and hold (about 2 seconds) the touch sensor on the L (left) or R (right) side headphone. Calls can be ended from either the L (left) or R (right) side headphone. If the call was received while listening to music, playback is resumed. Music playback may not be resumed on some Bluetooth devices.
Using the product L (left) side headphone touch sensor operations Touch sensor Operation Function Receiving a call: Answers the call. Touch During a call: Increases the call volume by 1 level. Touch (twice) During a call: Decreases the call volume by 1 level. Receiving a call: Rejects the call.
Using the product Touch and hold (about 2 seconds) the touch sensor on the L (left) side headphone. The equalizer function will be turned on/off with every long touch (about 2 seconds). Equalizer settings Use the “CONNECT” app to change the equalizer function setting applied with the touch sensor. Equalizer Description Increased bass to get you up and moving.
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Using the product Function Description Volume Adjustment Level The number of volume adjustment steps can be changed. You can switch to the hear-through function. You can also adjust the Ambience Control volume of external sounds that are captured. You can change the talk-through type and adjust the music playback Talk-Through volume for talk-through.
Indicator lamp display Pairing Status Indicator lamp display pattern ○ - ○ - ○ ・ ・・ Flashing white (gradually lighting up) Searching for devices (Depending on the order the L (left) and R (right) side headphones are removed from the charging case, the indicator lamp on one side will flash white quickly, and the other will flash white slowly.) Connecting Status...
Voice guidance The product plays English voice guidance in the following situations. Use the “CONNECT” app to change the voice guidance language. Situation Voice guidance Bluetooth is connected Connected Bluetooth is disconnected Disconnected Talk-through function on Talk-through Equalizer function on Equalizer on Equalizer function off Battery level is low...
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Cleaning Get into the habit of regularly cleaning the product to ensure that it will last for a long time. Do not use alcohol, paint thinners, or other solvents for cleaning purposes. Headphones Remove the eartips when cleaning the headphones. The headphones may not function properly if they become wet.
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Cleaning Wipe off any water that remains in the sound reproduction part, microphone, or vent by gently pressing the headphones against a dry, clean, and soft cloth. Do not wipe off any water in the gap with a cotton swab, etc. Dry the product thoroughly in a well-ventilated shady location.
Eartips Eartip size The product includes silicone eartips in 4 sizes (XS, S, M, and L). At the time of purchase, the M-size silicone eartips are attached. To ensure the best sound quality, select the eartip size that is best suited for you, and adjust the eartips inside your ears for a snug fit.
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Forced pairing mode / reset If the product does not connect to a device (forced pairing mode) If pairing cannot be cancelled or is not successful, you can use forced pairing mode to perform pairing again. When operating, hold the headphones so that they stay in the charging case. About 5 seconds after both headphones (L (left) and R (right) sides) are placed in the charging case (with battery remaining), touch and hold (about 4 seconds) the touch sensors of both headphones.
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Forced pairing mode / reset If the procedure cannot be completed as expected, remove the headphones from the charging case again and repeat the procedure from the beginning. The “CONNECT” app can also be used to perform a reset.
Troubleshooting Power is not supplied Charge the product. Unable to pair Confirm that the Bluetooth device communicates using Ver. 2.1+EDR or higher. Place the product and the Bluetooth device within 1 m (3.3') of each other. Set the profiles for the Bluetooth device. For procedures on how to set profiles, refer to the Bluetooth device’s user manual.
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Troubleshooting Check whether the talk-through function is turned on/off. If the talk-through function is on, the volume of music being played back will decrease automatically. Touch and hold (about 2 seconds) the touch sensor on the R (right) side headphone to turn the talk-through function on or off. Sound only comes out of one headphone Make sure there is battery level remaining.
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Troubleshooting Charge the charging case. Wipe dirt off the charging terminal with a dry cloth. The charging case or headphones may be hot. Allow the temperature of the product to cool sufficiently before charging in a well-ventilated place (10 to 35°C (50 to 95°F)) away from direct sunlight. Bass is insufficient Select the eartips that best fit your ears, and wear the product securely.
Specifications Headphones Type Dynamic Driver 9 mm Sensitivity 110 dB/mW Frequency response 5 to 20,000 Hz 20 ohms Impedance Microphone Type MEMS type Polar pattern Omnidirectional -38 dB (1 V/Pa, at 1 kHz) Sensitivity Frequency response 100 to 8,000 Hz Communication specifications Communication system Bluetooth version 5.1...
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Specifications Other Headphones: DC 3.7 V lithium ion battery Power supply Charging case: DC 3.7 V lithium ion battery Headphones: Approx. 2.5 hours Charging time Charging case: Approx. 3 hours Continuous transmission time (music playback): Max. approx. 7.5 hours Operating time (headphones) Max.
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Trademarks ® The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc., and any use of such marks by Audio-Technica Corporation is under license. Other trademarks and trade names are those of their respective owners. ™ USB Type-C is a trademark of USB Implementers Forum.
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