Yes, the Sony WH-CH720N headset can be paired with two different devices simultaneously using Bluetooth. This feature, called multipoint connection, allows the headset to connect to two devices via Bluetooth at the same time. However, using one device via Bluetooth and another via a wired connection simultaneously is not specified.

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Summary of Contents for Sony WH-CH720N

Page 1 Quick Start Guide Download the app, and set up the headset To use all functions and improved performances, update the software of the headset and “Sony | Headphones Connect” app to the latest version. For details, refer to the following: https://www.sony.net/elesupport/...
Page 2: Related Information
The headset enters pairing mode automatically when you turn on the headset for the first time after purchase. Establishing a BLUETOOTH® connection Follow the downloaded “Sony | Headphones Connect” app instructions. Operating the headset You can use the buttons on the right unit of the headset to perform the following operations.
Page 3: Making Connections
Turning off the headset Making connections How to make a wireless connection to Bluetooth devices Easy setup with app Connecting with the “Sony | Headphones Connect” app Android smartphone Pairing and connecting with an Android smartphone Connecting to a paired Android smartphone...
Page 4: Making Phone Calls
Using the supplied headphone cable Listening to music Listening to music via a Bluetooth connection Listening to music from a device via Bluetooth connection Controlling the audio device (Bluetooth connection) Disconnecting Bluetooth connection (after use) About 360 Reality Audio Noise canceling function What is noise canceling? Using the noise canceling function Listening to ambient sound...
Page 5: Troubleshooting
What you can do with the “Sony | Headphones Connect” app Installing the “Sony | Headphones Connect” app Accessing support information from the “Sony | Headphones Connect” app How to keep the software up-to-date (for comfortable use of the headset)
Page 6: Specifications
Resetting or initializing the headset Resetting the headset Initializing the headset to restore factory settings Specifications Specifications 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 7: What You Can Do With The Bluetooth Function
You can enjoy music wirelessly from a smartphone or music player, etc. Talking on the phone You can make and receive calls hands-free, while leaving your smartphone or mobile phone in your bag or pocket. 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 8 In the factory settings, you will hear the English voice guidance in the following situations via the headset. You can change the language of the voice guidance and turn on/off the voice guidance using “Sony | Headphones Connect” app. For more details, refer to the “Sony | Headphones Connect” app help guide.
Page 9: Checking The Package Contents
After opening the package, check that all of the items in the list are included. If any items are missing, contact your dealer. Numbers in ( ) indicate the item amount. Wireless Noise Canceling Stereo Headset USB Type-C® cable (USB-A to USB-C®) (approx. 20 cm (7.88 in.)) (1) Headphone cable (approx. 1.2 m (47.25 in.)) (1) 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 10: Location And Function Of Parts
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Location and function of parts Headband (left) mark Tactile dot There is a tactile dot on the left unit. Noise canceling function microphones (left, right) Pick up the sound of the noise when the noise canceling function is in use.
Page 11 There is a tactile dot on the + button. Use this dot as a guide when operating the headset. (play/call/next/previous) button – (volume –) button NC/AMB (noise canceling/Ambient Sound Mode) button Related Topic About the indicator Checking the remaining battery charge 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 12: About The Indicator
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N About the indicator You can check various statuses of the headset by the indicator. : Turns on in blue / : Turns on in orange / -: Turns off Turning on -- (flashes twice in blue) In this case, when the remaining battery charge is 10% or lower (requires charging), the indicator lights successively as follows.
Page 13 --- (repeatedly flashes slowly in blue) Initialization completed - (flashes 4 times in blue) For details, see “Initializing the headset to restore factory settings”. Related Topic Checking the remaining battery charge Initializing the headset to restore factory settings 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 14: Wearing The Headset
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Wearing the headset Put the headset on your ears. Check the left and right units of the headset. There is a tactile dot on the (left) mark side. A: Tactile dot Extend the slider.
Page 15 Adjust the orientation of the left and right units so that the earpads fit snugly all around your ears. If you put on the headset without adjusting the slider, the headset may not be positioned properly on your head, resulting in discomfort or a weak noise canceling effect. 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 16: Charging The Headset
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Charging the headset The headset contains a built-in lithium-ion rechargeable battery. Use the supplied USB Type-C cable to charge the headset before use. Connect the headset to an AC outlet. Use the supplied USB Type-C cable and a commercially available USB AC adaptor.
Page 17 If the headset detects a problem while charging due to the following causes, the indicator (orange) flashes. In this case, charge once again within the charging temperature range. If the problem persists, consult your nearest Sony dealer. Ambient temperature exceeds the charging temperature range of 5 °C - 35 °C (41 °F - 95 °F).
Page 18: Available Operating Time
Noise canceling function: ON Max. 35 hours Ambient Sound Mode: ON Max. 35 hours Max. 50 hours Hint By using the “Sony | Headphones Connect” app, you can check which codec is used for a connection or switch the DSEE™ function. Note...
Page 19 If you run the above settings at the same time, the available operating time of the battery becomes even shorter. Related Topic Supported codecs About the DSEE function What you can do with the “Sony | Headphones Connect” app 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 20: Checking The Remaining Battery Charge
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Checking the remaining battery charge You can check the remaining battery charge of the rechargeable battery by the following way. When you press the (power) button while the headset is on, a voice guidance indicating the remaining battery charge can be heard.
Page 21 You can also check the remaining battery charge of the headset with the “Sony | Headphones Connect” app. Android smartphones and iPhone/iPod touch both support this app. Note If the headset and smartphone are not connected with HFP, the remaining battery charge will not be correctly displayed.
Page 22: Turning On The Headset
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Turning on the headset Press and hold the (power) button for about 2 seconds or more until the indicator (blue) flashes. Related Topic Turning off the headset 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 23: Turning Off The Headset
Press and hold the (power) button for about 2 seconds or more until the indicator (blue) turns off. Hint You can also turn off the headset with the “Sony | Headphones Connect” app. Related Topic Turning on the headset 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 24: How To Make A Wireless Connection To Bluetooth Devices
Connecting to a paired Android smartphone Connecting to a paired iPhone Connecting to a paired computer (Windows 11) Connecting to a paired computer (Windows 10) Connecting to a paired computer (Mac) Connecting to a paired Bluetooth device 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 25 Connecting with the “Sony | Headphones Connect” app Launch the “Sony | Headphones Connect” app on your Android smartphone/iPhone to connect the headset to a smartphone or iPhone. For more details, refer to the “Sony | Headphones Connect” app help guide.
Page 26: Pairing And Connecting With An Android Smartphone
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Pairing and connecting with an Android smartphone The operation to register the device that you wish to connect to is called “pairing”. First, pair a device to use it with the headset for the first time.
Page 27 If they are not connected, see “Connecting to a paired Android smartphone”. If [WH-CH720N] does not appear on your Android smartphone screen, try again from the beginning of step A Passkey may be called “Passcode”, “PIN code”, “PIN number”, or “Password”. Hint The operation above is an example.
Page 28 How to make a wireless connection to Bluetooth devices Connecting to a paired Android smartphone Listening to music from a device via Bluetooth connection Disconnecting Bluetooth connection (after use) Initializing the headset to restore factory settings 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 29: Connecting To A Paired Android Smartphone
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Connecting to a paired Android smartphone Unlock the screen of the Android smartphone if it is locked. Turn on the headset. Press and hold the (power) button for about 2 seconds or more.
Page 30 The operation above is an example. For more details, refer to the operating instructions supplied with the Android smartphone. Note When connecting, [WH-CH720N], [LE_WH-CH720N], or both may be displayed on the connecting device. When both or [WH- CH720N] is displayed, select [WH-CH720N]; when [LE_WH-CH720N] is displayed, select [LE_WH-CH720N].
Page 31: Pairing And Connecting With An Iphone
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Pairing and connecting with an iPhone The operation to register the device that you wish to connect to is called “pairing”. First, pair a device to use it with the headset for the first time.
Page 32 If they are not connected, see “Connecting to a paired iPhone ”. If [WH-CH720N] does not appear on your iPhone screen, try again from the beginning of step A Passkey may be called “Passcode”, “PIN code”, “PIN number”, or “Password”. Hint The operation above is an example.
Page 33 How to make a wireless connection to Bluetooth devices Connecting to a paired iPhone Listening to music from a device via Bluetooth connection Disconnecting Bluetooth connection (after use) Initializing the headset to restore factory settings 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 34: Connecting To A Paired Iphone
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Connecting to a paired iPhone Unlock the screen of the iPhone if it is locked. Turn on the headset. Press and hold the (power) button for about 2 seconds or more. You will hear a notification sound indicating that the headset is turned on.
Page 35 The operation above is an example. For more details, refer to the operating instructions supplied with the iPhone. Note When connecting, [WH-CH720N], [LE_WH-CH720N], or both may be displayed on the connecting device. When both or [WH- CH720N] is displayed, select [WH-CH720N]; when [LE_WH-CH720N] is displayed, select [LE_WH-CH720N].
Page 36 Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Pairing and connecting with a computer (Windows® 11) The operation to register the device that you wish to connect to is called “pairing”. First, pair a device to use it with the headset for the first time.
Page 37 0:00 Wake the computer up if the computer is in standby (sleep) or hibernation mode. Pair the headset using the computer. To connect using the Swift Pair function Select [Connect] from the pop-up menu displayed on your computer screen. To connect without using the Swift Pair function Click the [Start] button, then [Settings].
Page 38 “Connecting to a paired computer (Windows 11)”. If [WH-CH720N] does not appear on your computer screen, try again from “To connect without using the Swift Pair function” of step A Passkey may be called “Passcode”, “PIN code”, “PIN number”, or “Password”.
Page 39 Connecting to a paired computer (Windows 11) Listening to music from a device via Bluetooth connection Making a video call on your computer Disconnecting Bluetooth connection (after use) Initializing the headset to restore factory settings 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 40: Pairing And Connecting With A Computer (Windows 10)
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Pairing and connecting with a computer (Windows 10) The operation to register the device that you wish to connect to is called “pairing”. First, pair a device to use it with the headset for the first time.
Page 41 0:00 Wake the computer up if the computer is in standby (sleep) or hibernation mode. Pair the headset using the computer. To connect using the Swift Pair function Select [Connect] from the pop-up menu displayed on your computer screen. To connect without using the Swift Pair function Click the [Start] button, then [Settings].
Page 42 Click the [Bluetooth & other devices] tab, click the [Bluetooth] switch to turn on the Bluetooth function, then click [Add Bluetooth or other device]. Click [Bluetooth]. Click [WH-CH720N].
Page 43 “Connecting to a paired computer (Windows 10)”. If [WH-CH720N] does not appear on your computer screen, try again from “To connect without using the Swift Pair function” of step A Passkey may be called “Passcode”, “PIN code”, “PIN number”, or “Password”.
Page 44 Listening to music from a device via Bluetooth connection Making a video call on your computer Disconnecting Bluetooth connection (after use) Initializing the headset to restore factory settings 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 45 Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Pairing and connecting with a computer (Mac) The operation to register the device that you wish to connect to is called “pairing”. First, pair a device to use it with the headset for the first time.
Page 46 You will hear a notification sound indicating that the connection is established. If they are not connected, see “Connecting to a paired computer (Mac)”. If [WH-CH720N] does not appear on your computer screen, try again from the beginning of step...
Page 47 How to make a wireless connection to Bluetooth devices Connecting to a paired computer (Mac) Listening to music from a device via Bluetooth connection Making a video call on your computer Disconnecting Bluetooth connection (after use) Initializing the headset to restore factory settings 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 48 Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Connecting to a paired computer (Windows 11) Before starting the operation, make sure of the following: Depending on the computer you are using, the built-in Bluetooth adaptor may need to be turned on. If you do not know how to turn on the Bluetooth adaptor or are unsure if your computer has a built-in Bluetooth adaptor, refer to the operating instructions supplied with the computer.
Page 49 On the [Sound] screen, select [WH-CH720N] for [Output] and [Input]. If [WH-CH720N] is not displayed for [Output] and [Input], proceed to step 3. Click [More sound settings]. On the [Playback] tab on the [Sound] screen, select [WH-CH720N], right-click it, and select [Connect] from the displayed menu.
Page 50 You will hear a notification sound indicating that the connection is established. On the [Recording] tab, select [WH-CH720N], right-click it, and select [Connect] from the displayed menu. Hint The operation above is an example. For more details, refer to the operating instructions supplied with the computer.
Page 51 Related Topic How to make a wireless connection to Bluetooth devices Pairing and connecting with a computer (Windows® 11) Listening to music from a device via Bluetooth connection Disconnecting Bluetooth connection (after use) 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 52: Connecting To A Paired Computer (Windows 10)
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Connecting to a paired computer (Windows 10) Before starting the operation, make sure of the following: Depending on the computer you are using, the built-in Bluetooth adaptor may need to be turned on. If you do not know how to turn on the Bluetooth adaptor or are unsure if your computer has a built-in Bluetooth adaptor, refer to the operating instructions supplied with the computer.
Page 53 From the [Choose your output device] drop-down menu, select [Headphones (WH-CH720N Stereo)]. If [Headphones (WH-CH720N Stereo)] is not displayed on the drop-down menu, proceed to step 3. Click [Sound Control Panel], right-click on the [Playback] tab on the [Sound] screen, and check the [Show Disconnected Devices] checkbox.
Page 54 You will hear a notification sound indicating that the connection is established. Hint The operation above is an example. For more details, refer to the operating instructions supplied with the computer.
Page 55 As for the operations on your computer, refer to the operating instructions supplied with the computer. Related Topic How to make a wireless connection to Bluetooth devices Pairing and connecting with a computer (Windows 10) Listening to music from a device via Bluetooth connection Disconnecting Bluetooth connection (after use) 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 56 Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Connecting to a paired computer (Mac) Compatible OS macOS (version 11 or later) Before starting the operation, make sure of the following: Depending on the computer you are using, the built-in Bluetooth adaptor may need to be turned on. If you do not know how to turn on the Bluetooth adaptor or are unsure if your computer has a built-in Bluetooth adaptor, refer to the operating instructions supplied with the computer.
Page 57 Select the headset using the computer. Select [ (System Preferences)] - [Bluetooth] from the Dock at the bottom of the screen. Click [WH-CH720N] on the [Bluetooth] screen while pressing the computer Control button and select [Connect] from the pop-up menu. The connection is established.
Page 58 Disconnecting Bluetooth connection (after use) 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 59: Pairing And Connecting With A Bluetooth Device
The indicator (blue) repeatedly flashes twice in a row. You will hear the voice guidance say, “Pairing”. 0:00 Perform the pairing procedure on the Bluetooth device to search for this headset. [WH-CH720N] will be displayed on the list of detected devices on the screen of the Bluetooth device. If it is not displayed, repeat from step...
Page 60 Select [WH-CH720N] displayed on the screen of the Bluetooth device for pairing. If Passkey input is required, input “0000”. A Passkey may be called “Passcode”, “PIN code”, “PIN number”, or “Password”. Make the Bluetooth connection from the Bluetooth device. Some devices automatically connect with the headset when pairing is complete.
Page 61: Connecting To A Paired Bluetooth Device
The operation above is an example. For more details, refer to the operating instructions supplied with the Bluetooth device. Note When connecting, [WH-CH720N], [LE_WH-CH720N], or both may be displayed on the connecting device. When both or [WH- CH720N] is displayed, select [WH-CH720N]; when [LE_WH-CH720N] is displayed, select [LE_WH-CH720N].
Page 62 As for the operations on your Bluetooth device, refer to the operating instructions supplied with the Bluetooth device. Related Topic How to make a wireless connection to Bluetooth devices Pairing and connecting with a Bluetooth device Listening to music from a device via Bluetooth connection Disconnecting Bluetooth connection (after use) 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 63 Connecting the headset to 2 devices simultaneously (multipoint connection) When [Connect to 2 devices simultaneously] is turned on with the “Sony | Headphones Connect” app, the headset can connect to 2 devices via Bluetooth connections simultaneously, allowing you to do the following.
Page 64 If you finish the call on the first device, the ring tone from the second device will be heard via the headset. Related Topic What you can do with the “Sony | Headphones Connect” app How to make a wireless connection to Bluetooth devices...
Page 65: Using The Supplied Headphone Cable
(play/call/next/previous) buttons cannot be used. Perform operations, such as adjusting the volume and play/pause, on the playback device. Related Topic Using the noise canceling function Listening to ambient sound during music playback (Ambient Sound Mode) 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 66 Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Listening to music from a device via Bluetooth connection If your Bluetooth device supports the following profiles, you can enjoy listening to music and control the device from your headset via Bluetooth connection.
Page 67 Adjust the length of the slider. Adjust the slider to a length where the headband touches the top of your head. Adjust the orientation of the units. Adjust the orientation of the left and right units so that the earpads fit snugly all around your ears. If you put on the headset without adjusting the slider, the headset may not be positioned properly on your head, resulting in discomfort or a weak noise canceling effect.
Page 68 If the communication condition is poor, the Bluetooth device may react incorrectly to the operation on the headset. Related Topic How to make a wireless connection to Bluetooth devices Controlling the audio device (Bluetooth connection) Using the noise canceling function 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 69: Controlling The Audio Device (Bluetooth Connection)
The available functions may vary depending on the connected device, the music software, or app used. In some cases, it may operate differently or may not work even when the operations described above are performed. When you use an iPhone, Siri may be activated by pressing and holding the (play/next/previous) button. 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 70: Disconnecting Bluetooth Connection (After Use)
You will hear a notification sound. Turn off the headset. You will hear a notification sound. Hint When you finish playing music, the Bluetooth connection may terminate automatically depending on the Bluetooth device. Related Topic Turning off the headset 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 71: Conditions Of Use
Download and use a music streaming service (charged) app that supports 360 Reality Audio on your smartphone or tablet equipped with iOS or Android. By optimizing the sound field and the acoustic feature of headset with the “Sony | Headphones Connect” app, you can enjoy a more realistic sense of reality.
Page 72 Ambient Sound Mode may not perform properly, or a beeping sound (feedback) may occur. If any of this is the case, remove your hands, etc. from the left and right microphones. A: Microphones (left, right) Related Topic Using the noise canceling function 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 73: Using The Noise Canceling Function
You can also change the settings of the noise canceling function and Ambient Sound Mode with the “Sony | Headphones Connect” app. You can select one of the following on the “Sony | Headphones Connect” app to set how you want the functions to change when you press the NC/AMB (noise canceling/Ambient Sound Mode) button.
Page 74 Related Topic About the voice guidance Turning on the headset What is noise canceling? Listening to ambient sound during music playback (Ambient Sound Mode) What you can do with the “Sony | Headphones Connect” app 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 75: Listening To Ambient Sound During Music Playback (Ambient Sound Mode)
“Sony | Headphones Connect” app installed. You can select one of the following on the “Sony | Headphones Connect” app to set how you want the functions to change when you press the NC/AMB (noise canceling/Ambient Sound Mode) button.
Page 76 Depending on the surrounding environment, wind noise may increase when the Ambient Sound Mode is turned on. In that case, change the Ambient Sound Mode settings from Normal mode to Voice mode using the “Sony | Headphones Connect” app. If the wind noise is still significant, turn off the Ambient Sound Mode.
Page 77 About the sound quality mode The following 2 sound quality modes during Bluetooth playback can be selected. You can switch the settings and check the sound quality mode with the “Sony | Headphones Connect” app. Priority on sound quality: Prioritizes the sound quality (default).
Page 78: Supported Codecs
If the connected device supports a codec of higher sound quality than SBC, you may need to set the device beforehand to enjoy music with the desired codec from the supported codecs. Refer to the operating instructions supplied with the device regarding setting the codec. Related Topic About the sound quality mode 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 79 Sound sources compressed by streaming playback, MP3, Bluetooth transmission codec, etc. are played with natural and expansive sound. The DSEE function can be set up on the “Sony | Headphones Connect” app, and is only available when connected to the headset via Bluetooth connection.
Page 80: Receiving A Call
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Receiving a call You can enjoy a hands-free call with a smartphone or mobile phone that supports the Bluetooth profile HFP (Hands-free Profile) or HSP (Headset Profile), via Bluetooth connection. If your smartphone or mobile phone supports both HFP and HSP, set it to HFP.
Page 81 Related Topic How to make a wireless connection to Bluetooth devices Making a call Functions for a phone call 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 82: Making A Call
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Making a call You can enjoy a hands-free call with a smartphone or mobile phone that supports the Bluetooth profile HFP (Hands-free Profile) or HSP (Headset Profile), via Bluetooth connection. If your smartphone or mobile phone supports both HFP and HSP, set it to HFP.
Page 83 Related Topic How to make a wireless connection to Bluetooth devices Receiving a call Functions for a phone call 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 84: Functions For A Phone Call
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Functions for a phone call The functions available during a call may vary depending on the profile supported by your smartphone or mobile phone. In addition, even if the profile is the same, the available functions may vary depending on the smartphone or mobile phone.
Page 85 (call) button is set to [Amazon Alexa], you cannot start up the voice dial function of the smartphone/mobile phone. The voice assist function (Google app, Siri) is also not available. Related Topic Receiving a call Making a call 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 86 [Headphones (WH-CH720N Stereo)] may not be selectable on the speaker or microphone settings, and only [WH-CH720N] may be displayed. If this is the case, select [WH- CH720N]. As for frequently asked questions and answers, refer to the customer support website.
Page 87 Disconnecting Bluetooth connection (after use) Customer support websites 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 88 You will hear a notification sound. Turn off the headset. You will hear a notification sound. Hint When you finish playing music, the Bluetooth connection may terminate automatically depending on the Bluetooth device. Related Topic Turning off the headset 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 89 Compatible smartphones Smartphones installed with Android™ 6.0 or later Launch the “Sony | Headphones Connect” app, and set the function when you press and hold the (play/call) button to [Google Assistant]. When using Google Assistant for the first time, launch the Google Assistant app and touch [Finish headphones setup] on the Conversation View, and follow the on-screen instructions to complete initial setup for Google Assistant.
Page 90 For details on the services provided by other companies such as Google Assistant or Amazon Alexa, consult each service provider directly. Sony shall assume no responsibility for any problems such as misunderstandings related to the services provided by other companies.
Page 91 Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Using Amazon Alexa By using the Amazon Alexa app installed on a mobile device such as a smartphone, you can speak to the headset’s microphone to operate the mobile device or perform a search.
Page 92 From [AVAILABLE DEVICES] on the [Select your device] screen, select [WH-CH720N]. On the [Set up Alexa on your WH-CH720N] screen, touch [CONTINUE]. If the [This will override the current voice assistant on this accessory] screen appears, touch [CONTINUE]. On the [Setup Complete] screen, touch [DONE].
Page 93 Amazon Alexa. You can restore the button back to its previous functions by changing its settings on the “Sony | Headphones Connect” app. Similarly, you can reconfigure the button back to Amazon Alexa if you have previously connected to Amazon Alexa, but have changed the function to another one.
Page 94 Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Using Google Assistant (with voice activation) By using the Google app that comes with the Android smartphone, you can speak to the headset’s microphone to operate the Android smartphone. Set the assist and voice input selection to the Google app.
Page 95 The Google app may not be activated depending on specifications of the smartphone or application version. The Google app does not work when connected to a device not compatible with the voice assist function. 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 96: Using The Voice Assist Function (Siri)
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Using the voice assist function (Siri) By using Siri that comes with iPhone, you can speak to the headset’s microphone to operate the iPhone. Turn Siri on. On iPhone, select [Settings] - [Siri & Search] to turn [Press Home for Siri] and [Allow Siri When Locked] on.
Page 97 In this case, ambient sounds or the sounds of the headset operation may be heard through the headset, but this is not a malfunction. Siri may not be activated depending on specifications of the smartphone or application version. 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 98 For details on the “Sony | Headphones Connect” app, refer to the following URL. https://rd1.sony.net/help/mdr/hpc/h_zz/ Hint The operation of the “Sony | Headphones Connect” app differs depending on the audio device. The app specifications and screen design may change without prior notice. Related Topic Installing the “Sony | Headphones Connect”...
Page 99 Supported codecs About the DSEE function Connecting the headset to 2 devices simultaneously (multipoint connection) About 360 Reality Audio 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 100 WH-CH720N Installing the “Sony | Headphones Connect” app Download the “Sony | Headphones Connect” app from the Google Play store or App Store, and install the app on your smartphone. For details on the “Sony | Headphones Connect” app, refer to the following URL.
Page 101 WH-CH720N Accessing support information from the “Sony | Headphones Connect” app You can access the latest support information from the “Sony | Headphones Connect” app. Select [Help] on the “Sony | Headphones Connect” app screen. The [Headphones Connect Help] screen appears and support information is displayed.
Page 102 WH-CH720N How to keep the software up-to-date (for comfortable use of the headset) Install the latest headset software using the “Sony | Headphones Connect” app to enjoy new functions or to resolve a certain number of issues with the headset.
Page 103: Other Notes
Bluetooth wireless technology. However, depending on the configured settings and other factors, this security may not be sufficient. Be careful when communicating using Bluetooth wireless technology. Sony shall assume no responsibility for any damages or loss resulting from information leaks that occur when using Bluetooth communications.
Page 104 The headset is not waterproof. If water or foreign matter enters the headset, it may result in fire or electric shock. If water or foreign matter enters the headset, stop use immediately and consult your nearest Sony dealer. Cleaning the headset When the headset exterior is dirty, wipe it clean with a soft dry cloth.
Page 105 Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N To prevent burning or malfunction due to getting wet On waterproof performance of the headset The headset is not waterproof. If water or foreign matter enters the headset, this can result in burnout or malfunction.
Page 106 Touching the headset with sweaty hands, or using the headset in situations where the headset may get soaked in sweat Putting the headset in a bag with a cold PET bottle If the headset gets wet, or water enters the headset If a wet headset is charged or turned on, this can result in burnout or malfunction.
Page 107 A: USB Type-C port B: Headphone cable input jack 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 108 WH-CH720N Licenses This product contains software that Sony uses under a licensing agreement with the owner of its copyright. We are obligated to announce the contents of the agreement to customers under requirement by the owner of copyright for the software. Please access the following URL and read the contents of the license.
Page 109 USB Type-C® and USB-C® are registered trademarks of USB Implementers Forum. DSEE is a trademark or registered trademark of Sony Group Corporation or its affiliates. All other trademarks and registered trademarks are trademarks or registered trademarks of their respective holders.
Page 110: Customer Support Websites
Wireless Noise Canceling Stereo Headset WH-CH720N Customer support websites For customers in the U.S.A, Canada, and Latin America: https://www.sony.com/am/support For customers in European countries: https://www.sony.eu/support For customers in China: https://service.sony.com.cn For customers in other countries/regions: https://www.sony-asia.com/support 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 111: What Can I Do To Solve A Problem
This operation resets volume settings, etc. to the factory settings, and deletes all pairing information. Look up information on the issue on the customer support website. If the operations above do not work, consult your nearest Sony dealer. Related Topic...
Page 112 Initialize the headset, and pair the headset and the device again. Related Topic Charging the headset Checking the remaining battery charge Turning on the headset Resetting the headset Initializing the headset to restore factory settings 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 113: Charging Cannot Be Done
Update the OS of the computer. Restart the computer and try the USB connection procedure again in cases other than those stated above. Related Topic Charging the headset Resetting the headset Initializing the headset to restore factory settings 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 114: Charging Time Is Too Long
It is recommended to charge in a place with an ambient temperature between 15 °C and 35 °C (59 °F - 95 °F). Efficient charging may not be possible beyond this range. Related Topic Charging the headset 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 115 It is recommended to charge in a place with an ambient temperature between 15 °C and 35 °C (59 °F - 95 °F). Efficient charging may not be possible beyond this range. If the problem persists, consult your nearest Sony dealer.
Page 116 Check with the “Sony | Headphones Connect” app that the setting of [Connect to 2 devices simultaneously] is on. Stop the playback of the application on the first device.
Page 117: Low Sound Level
In that case, turn up the volume of both the headset and the connected device. If the sound is still low even after adjusting the volume on the connected device, adjust the volume with the “Sony | Headphones Connect” app.
Page 118 Leave the place where the noise or unusual sound is heard. Or turn off the noise canceling function/Ambient Sound Mode from the “Sony | Headphones Connect” app. When using a video calling application on a computer, switch the Bluetooth connection to HFP or HSP by operating the computer.
Page 119 When this setting is changed, music may pause momentarily. This is not a malfunction. Reset the headset. Initialize the headset, and pair the headset and the device again. Related Topic About the sound quality mode Resetting the headset Initializing the headset to restore factory settings 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 120 With the “Sony | Headphones Connect” app, check the setting of [Ambient Sound Control]. If it is set to [Ambient Sound], the effect of noise canceling is reduced. Set it to the noise canceling mode.
Page 121: Pairing Cannot Be Done
Reset the headset. Initialize the headset, and pair the headset and the device again. Related Topic How to make a wireless connection to Bluetooth devices Resetting the headset Initializing the headset to restore factory settings 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 122: Unable To Make A Bluetooth Connection
Reset the headset. Initialize the headset, and pair the headset and the device again. Related Topic How to make a wireless connection to Bluetooth devices Resetting the headset Initializing the headset to restore factory settings 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 123 While the headset is connected to a device via the supplied headphone cable and the headset is turned on, you cannot perform operations such as volume adjustment or play/pause. Related Topic Resetting the headset Initializing the headset to restore factory settings 5-045-500-11(1) Copyright 2023 Sony Corporation...
Page 124 [Headset (WH-CH720N Hands-Free)] cannot be selected, select [Headset (WH-CH720N Hands-Free)] on the settings of your computer to make connections. Depending on the video calling application you are using, this function may not be available.
Page 125: Resetting The Headset
Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Resetting the headset If the headset cannot be turned on or cannot be operated even when it is turned on, reset the headset. Connect the headset to an AC outlet. Use the supplied USB Type-C cable and a commercially available USB AC adaptor.
Page 127: Initializing The Headset To Restore Factory Settings
This operation resets volume settings, etc. to the factory settings, and deletes all pairing information. In this case, delete the pairing information for the headset from the connected device and then pair them again. If the headset does not operate correctly even after initializing, consult your nearest Sony dealer. Related Topic...
Page 128 Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Specifications Headset Power source: DC 3.85 V: Built-in lithium-ion rechargeable battery DC 5 V: When charged using USB Operating temperature: 0 °C to 40 °C (32 °F to 104 °F) Charging time: Approx.
Page 129 11 iPhone XS Max iPhone XS iPhone XR iPhone X iPhone 8 Plus iPhone 8 iPhone 7 Plus iPhone 7 iPhone SE iPhone 6s Plus iPhone 6s iPod touch (7th generation) (As of May 2022) 5-045-500-11(1) Copyright 2023 Sony Corporation...

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