Sony WH-CH720N Reference guide

Help Guide
Wireless Noise Canceling Stereo Headset
WH-CH720N
Model: YY2966
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/
Let’s start to use
Turning on the headset
1

To prevent burning or malfunction due to getting wet
The headset is not waterproof.
If the headset is charged while it is wet with rain or sweat, etc., this can result in burnout or malfunction.
Related information
Wearing the headset
Establishing a Bluetooth connection manually
Charging the headset
Press and hold the (power) button for about 2 seconds or more until the indicator (blue) flashes.
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.
(play/next/previous) button
Press once briefly while paused: Play
Press once briefly during playback: Pause
Press twice briefly: Skip to the beginning of the next track
Press 3 times briefly: Skip to the beginning of the previous track (or the current track during
playback)
+ (volume +)/ – (volume –) buttons
Adjust the volume
For more details on operations, refer to “Controlling the audio device (Bluetooth connection)”.
Getting started
What you can do with the Bluetooth function
About the voice guidance
Supplied accessories
Checking the package contents
Parts and controls
Location and function of parts
About the indicator
2

Wearing the headset
Power/Charging
Charging the headset
Available operating time
Checking the remaining battery charge
Turning on the headset
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
iPhone (iOS devices)
Pairing and connecting with an iPhone
Connecting to a paired iPhone
Computers
Pairing and connecting with a computer (Windows® 11)
Pairing and connecting with a computer (Windows 10)
Pairing and connecting with a computer (Mac)
Connecting to a paired computer (Windows 11)
Connecting to a paired computer (Windows 10)
Connecting to a paired computer (Mac)
Other Bluetooth devices
Pairing and connecting with a Bluetooth device
Connecting to a paired Bluetooth device
Multipoint connection
Connecting the headset to 2 devices simultaneously (multipoint connection)
3

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
Listening to ambient sound during music playback (Ambient Sound Mode)
Sound quality mode
About the sound quality mode
Supported codecs
About the DSEE function
Making phone calls
Receiving a call
Making a call
Functions for a phone call
Making a video call on your computer
Disconnecting Bluetooth connection (after use)
Using the voice assist function
Using Google Assistant (with button)
Using Amazon Alexa
Using Google Assistant (with voice activation)
Using the voice assist function (Siri)
Using the apps
4

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)
Important information
Precautions
To prevent burning or malfunction due to getting wet
Licenses
Trademarks
Customer support websites
Troubleshooting
What can I do to solve a problem?
Power/Charging
Unable to turn on the headset.
Charging cannot be done.
Charging time is too long.
The available operating time is short (the duration of the battery is short).
Sound
No sound
Low sound level
Low sound quality, or noise or unusual sound can be heard.
Sound skips frequently.
The effect of noise canceling is not sufficient.
Bluetooth connection
Pairing cannot be done.
Unable to make a Bluetooth connection.
The headset cannot be operated.
Cannot hear the other person or the call volume is low during calls/The other person cannot hear you or their call volume is low
during calls.
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5-045-500-11(1) Copyright 2023 Sony Corporation
Resetting or initializing the headset
Resetting the headset
Initializing the headset to restore factory settings
Specifications
Specifications
6

Help Guide
Wireless Noise Canceling Stereo Headset
WH-CH720N
What you can do with the Bluetooth function
The headset uses Bluetooth wireless technology, allowing you to do the following.
Listening to music
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
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Help Guide
Wireless Noise Canceling Stereo Headset
WH-CH720N
About the voice guidance
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.
https://rd1.sony.net/help/mdr/hpc/h_zz/
When entering pairing mode: “Pairing”
When informing the remaining battery charge: “Battery about XX %” (The “XX” value indicates the approximate
remaining charge. Use it as a rough estimate.) / “Battery fully charged”
When the remaining battery charge is low: “Low battery”
When automatically turning off due to low battery: “Battery is empty”
When Google™ Assistant is not available on the smartphone connected to the headset even if you operate the
headset: “Google Assistant is not connected”
When Amazon Alexa is not available on the smartphone connected to the headset even if you operate the headset:
“Either your mobile device isn’t connected; or you need to open the Alexa App and try again”
Note
It takes about 10 minutes when you change the language of the voice guidance.
If the voice guidance is not heard after changing the voice guidance language or updating the software, turn the headset off and
on again.
5-045-500-11(1) Copyright 2023 Sony Corporation
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Help Guide
Wireless Noise Canceling Stereo Headset
WH-CH720N
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)
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Help Guide
Wireless Noise Canceling Stereo Headset
WH-CH720N
Location and function of parts
Headband1.
(left) mark2.
Tactile dot
There is a tactile dot on the left unit.
3.
Noise canceling function microphones (left, right)
Pick up the sound of the noise when the noise canceling function is in use.
4.
Built-in antenna
A Bluetooth antenna is built into the headset.
5.
Left unit6.
Sliders (left, right)
Slide to adjust the length of the headband.
7.
(right) mark8.
Right unit9.
Power/ (Bluetooth) indicator (blue/orange)
Lights up in blue or orange to indicate the power or communication status of the headset.
10.
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Related Topic
About the indicator
Checking the remaining battery charge
5-045-500-11(1) Copyright 2023 Sony Corporation
(power) button11.
USB Type-C port
Connect the headset to a computer, or to an AC outlet via a commercially available USB AC adaptor, with the
supplied USB Type-C cable to charge the headset.
12.
Headphone cable input jack
Connect a music player, etc. using the supplied headphone cable. Make sure that you insert the cable until it clicks. If
the plug is not connected correctly, you may not hear the sound properly.
13.
Call microphone
Picks up the sound of your voice when talking on the phone.
14.
+ (volume +) button
There is a tactile dot on the + button. Use this dot as a guide when operating the headset.
15.
(play/call/next/previous) button16.
– (volume –) button17.
NC/AMB (noise canceling/Ambient Sound Mode) button18.
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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.
-- -- (repeatedly flashes slowly in orange for about 15 seconds)
Turning off
---- (lights up in blue for about 2 seconds)
Displaying the remaining battery charge
Remaining charge: More than 10%
-- -- (flashes twice in blue)
Remaining charge: 10% or lower (requires charging)
-- -- (repeatedly flashes slowly in orange for about 15 seconds)
For details, see “Checking the remaining battery charge”.
When the remaining battery charge becomes low
-- -- (repeatedly flashes slowly in orange for about 15 seconds)
Charging
While charging
(lights up in orange)
The indicator turns off after charging is complete.
Abnormal temperature
- --- - --- - (repeatedly flashes twice in orange)
Abnormal charging
-- -- -- (repeatedly flashes slowly in orange)
Bluetooth function
Pairing mode
- ---- - ---- - (repeatedly flashes twice in blue)
Not connected
---- ---- (repeatedly flashes in blue at about 1-second intervals)
Connection process completed
- - - - - - - - (repeatedly flashes quickly in blue for about 5 seconds)
Connected
- - - - - - - - (repeatedly flashes in blue at about 5-second intervals)
Incoming call
-- -- -- -- -- -- (repeatedly flashes quickly in blue)
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The unconnected and connected status indications automatically turn off after a period of time has passed. They start
flashing again for a period of time when some operation is performed. When the remaining battery charge becomes low,
the indicator starts flashing in orange.
Other
Headphone cable connected (power is turned on)
- - - - - - - - (repeatedly flashes in blue at about 5-second intervals)
The indicator turns off automatically after a period of time has passed. When the remaining battery charge becomes
low, the indicator starts flashing in orange.
Updating software
--- --- (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
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Help Guide
Wireless Noise Canceling Stereo Headset
WH-CH720N
Wearing the headset
Put the headset on your ears.
1
Check the left and right units of the headset.
There is a tactile dot on the (left) mark side.
A: Tactile dot
1.
Extend the slider.
Extend the slider to its full length before putting on the headset.
2.
Put on the headset.
Put on the headset with the earpads fitting snugly over your ears.
3.
Adjust the length of the slider.
Adjust the slider to a length where the headband touches the top of your head.
4.
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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.
5.
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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.
System requirements for battery charge using USB
USB AC adaptor
A commercially available USB AC adaptor capable of supplying an output current of 0.5 A (500 mA) or more
Personal computer
Personal computer with a standard USB port
We do not guarantee operation on all computers.
Operations using a custom-built or homebuilt computer are not guaranteed.
Hint
The headset can be also charged by connecting the headset to a running computer using the supplied USB Type-C cable.
If charging starts while the headset is on, the headset will turn off automatically.
Connect the headset to an AC outlet.
Use the supplied USB Type-C cable and a commercially available USB AC adaptor.
A: USB AC adaptor
The indicator (orange) on the headset lights up.
Charging is completed in about 3.5 hours * and the indicator turns off automatically.
After charging is complete, disconnect the USB Type-C cable.
1
Time required for charging the empty battery to its full capacity. The charging time may differ depending on the conditions of use.
*
16

Note
Charging may not be successful with cables other than the supplied USB Type-C cable.
Charging may not be successful depending on the type of USB AC adaptor.
When the headset is connected to an AC outlet or computer, all operations such as turning on the headset, registering or
connecting to Bluetooth devices, and music playback cannot be performed.
The headset cannot be charged when the computer goes into standby (sleep) or hibernation mode. In this case, change the
computer settings, and start charging once again.
If the headset is not used for a long time, the rechargeable battery usage hours may be reduced. However, the battery life will
improve after charging and discharging several times. If you store the headset for a long time, charge the battery once every 6
months to avoid over-discharge.
If the headset is not used for a long time, it may take longer to charge the battery.
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).
There is a problem with the rechargeable battery.
If the headset is not used for a long time, the indicator (orange) may not immediately light up when the headset starts charging.
Please wait a moment until the indicator lights up.
If the usage hours of the built-in rechargeable battery decrease significantly, the battery should be replaced. Consult your nearest
Sony dealer.
Avoid exposure to extreme temperature changes, direct sunlight, moisture, sand, dust, and electrical shock. Never leave the
headset in a parked vehicle.
When connecting the headset to a computer, use only the supplied USB Type-C cable, and make sure to connect them directly.
Charging will not be properly completed when the headset is connected through a USB hub.
5-045-500-11(1) Copyright 2023 Sony Corporation
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Help Guide
Wireless Noise Canceling Stereo Headset
WH-CH720N
Available operating time
The available operating times of the headset with the battery fully charged are as follows:
Bluetooth connection
Music playback time
About 60 minutes of music playback is possible after 3 minutes charging. About 4.5 hours of music playback is
possible after 10 minutes charging as well.
Communication time
Headphone cable connected (power is turned on)
Hint
By using the “Sony | Headphones Connect” app, you can check which codec is used for a connection or switch the DSEE™
function.
Note
Codec Noise canceling function/Ambient Sound Mode Available operating time
AAC Noise canceling function: ON Max. 35 hours
AAC Ambient Sound Mode: ON Max. 35 hours
AAC OFF Max. 50 hours
SBC Noise canceling function: ON Max. 35 hours
SBC Ambient Sound Mode: ON Max. 35 hours
SBC OFF Max. 50 hours
Noise canceling function/Ambient Sound Mode Available operating time
Noise canceling function: ON Max. 35 hours
Ambient Sound Mode: ON Max. 35 hours
OFF Max. 40 hours
Noise canceling function/Ambient Sound Mode Available operating time
Noise canceling function: ON Max. 35 hours
Ambient Sound Mode: ON Max. 35 hours
OFF Max. 50 hours
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Usage hours may be different from the time described above depending on the settings for the headset functions and usage
conditions.
If you set the following functions, the available operating time of the battery becomes shorter than the ones described above.
Equalizer
DSEE
Function to launch the voice assistant by your voice
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
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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.
“Battery about XX %” (The “XX” value indicates the approximate remaining charge.)
“Battery fully charged”
The remaining battery charge indicated by the voice guidance may differ from the actual remaining charge in some
cases. Use it as a rough estimate.
The indicator (orange) also flashes for about 15 seconds if the remaining battery charge is 10% or lower when the
headset is turned on.
When the remaining charge becomes low
When you are using an iPhone or iPod touch
When the headset is connected to an iPhone or iPod touch over an HFP (Hands-free Profile) Bluetooth connection, it will
show an icon that indicates the remaining battery charge of the headset on the screen of the iPhone or iPod touch.
The display position is an example.
A: Remaining battery charge of the headset
The approximate remaining charge is shown at 10 different levels. B through E are display examples.
B: 100%
C: 70%
D: 50%
E: 20% or lower (requires charging)
The remaining battery charge of the headset is also displayed on the widget of an iPhone or iPod touch running iOS 11
or later.
For more details, refer to the operating instructions supplied with the iPhone or iPod touch.
The remaining charge which is displayed may differ from the actual remaining charge in some cases. Use it as a rough
estimate.
When you are using an Android™ smartphone (OS 8.1 or later)
When the headset is connected to an Android smartphone via HFP Bluetooth connection, select [Settings] - [Device
connection] - [Bluetooth] to display the remaining battery charge of the headset in 10 different levels such as “100%”,
“70%”, “50%” or “10%” in the connected Bluetooth device column. The operation above is an example. For details, refer
to the operating instructions of the Android smartphone.
The remaining charge which is displayed may differ from the actual remaining charge in some cases. Use it as a rough
estimate.
Hint
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