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Sony WH-CH720N Wireless Bluetooth Headphones User Guide

Sony WH-CH720N Wireless Bluetooth Headphones FEATURE

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Sony WH-CH720N Wireless Bluetooth Headphones

Sony WH-CH720N Wireless Bluetooth Headphones PRODUCT

About SONY
Sony was founded in 1946 by Masaru Ibuka and Akio Morita, originally as Tokyo Tsushin Kogyo. The company started with a focus on producing innovative consumer electronics, such as radios and tape recorders, and later expanded into various other areas, including televisions, audio equipment, cameras, video game consoles, and mobile devices.

Here are some key aspects and divisions of Sony:

  1. Electronics: Sony is widely recognized for its wide range of consumer electronics, including televisions, home audio systems, digital cameras, smartphones, tablets, laptops, and gaming consoles. The company has been at the forefront of technological advancements and has introduced many groundbreaking products over the years.
  2. Entertainment: Sony is also heavily involved in the entertainment industry. It owns and operates Sony Pictures Entertainment, which produces and distributes movies and television shows globally. Additionally, Sony Music Entertainment is one of the largest music labels in the world, representing a wide array of artists across various genres.
  3. PlayStation: Sony’s PlayStation brand is a dominant force in the gaming industry. The PlayStation consoles, including the latest PlayStation 5, have gained immense popularity among gamers worldwide. Sony also develops and publishes a range of video games through its subsidiary, Sony Interactive Entertainment.
  4. Imaging: Sony is a major player in the digital imaging market, producing high-quality cameras, lenses, and other imaging equipment. Its Alpha series of mirrorless cameras have garnered critical acclaim and is favored by both amateur and professional photographers.

Sony continues to innovate and expand its presence in different sectors, including virtual reality, robotics, and artificial intelligence. The company is known for its commitment to technological advancements, design excellence, and delivering high-quality products and experiences to its customers.

Location and function of partsSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-1

  1. Headband
  2. lef mark
  3. Tactile dot
    There is a tactile dot on the left unit.
  4. Noise-canceling function microphones (left, right)
    Pick up the sound of the noise when the noise canceling function is in use.
  5. Built-in antenna
    A Bluetooth antenna is built into the headset.
  6. Left unit
  7. Sliders (left, right)
    Slide to adjust the length of the headband.
  8. Right mark
  9. Right unit
  10. Power/ (Bluetooth) indicator (blue/orange)
    Lights up in blue or orange to indicate the power or communication status of the headset.
  11. Power button
  12. 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.
  13. 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.
  14. Call microphone
    Picks up the sound of your voice when talking on the phone.
  15. + (volume +) button
    There is a tactile dot on the + button. Use this dot as a guide when operating the headset.
  16. (play/call/next/previous) button
  17. – (volume –) button
  18. NC/AMB (noise canceling/Ambient Sound Mode) button

About the indicator

You can check various statuses of the headset by the indicator.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-2

Turning onSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-3

In this case, when the remaining battery charge is 10% or lower (requires charging), the indicator lights successively as follows.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-4

Turning offSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-5

Displaying the remaining battery charge

Remaining charge: More than 10%Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-3

Remaining charge: 10% or lower (requires charging)Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-4

When the remaining battery charge becomes lowSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-4

Charging

  • While charging. The indicator turns off after charging is complete.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-6
  • Abnormal temperatureSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-7
  • Abnormal chargingSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-8

Bluetooth function

  • Pairing modeSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-9
  • Not connectedSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-10
  • Connection process completedSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-11
  • ConnectedSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-12
  • Incoming callSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-13

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

  • The headphone cable is connected (power is turned on).Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-12 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 softwareSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-14
  • Initialization completedSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-15

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. Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-16A: Tactile dot

     

  2. Extend the slider.
    Extend the slider to its full length before putting on the headset.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-17

     

  3. Put on the headset.
    Put on the headset with the earpads fitting snugly over your ears.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-18

     

  4. Adjust the length of the slider.
    Adjust the slider to a length where the headband touches the top of your head.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-19

     

  5. 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.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-20 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.

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.

Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-21A: 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.

* Time required for charging the empty battery to its full capacity. The charging time may differ depending on the conditions of use.

After charging is complete, disconnect the USB Type-C cable.

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.

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.

Available operating time

The available operating times of the headset with the battery fully charged are as follows:

Bluetooth connection

Music playback timeSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-22

About 60 minutes of music playback is possible after 3 minutes of charging. About 4.5 hours of music playback is possible after 10 minutes of charging as well.

Communication timeSony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-23

The headphone cable is connected (power is turned on)Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-24

Hint

  • By using the “Sony | Headphones Connect” app, you can check which codec is used for a connection or switch the DSEE™ function.

Note

  • 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 with your voice

If you run the above settings at the same time, the available operating time of the battery becomes even shorter.

Checking the remaining battery charge

You can check the remaining battery charge of the rechargeable battery in the following way.

When you press the (power) button while the headset is on, 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.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-25

  • 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:

  • 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.
  • If you connect the headset to an iPhone/iPod touch or Android smartphone with “Media audio” (A2DP) only in a multipoint connection, the remaining battery charge will not be displayed correctly.
  • The remaining battery charge may not be properly displayed immediately after a software update or if the headset has not been used for a long time. In this case, repeatedly charge and discharge the battery multiple times to properly display the remaining battery charge.

Turning on the headset

  1. Press and hold the (power) button for about 2 seconds or more until the indicator (blue) flashes.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-26

Turning off the headset

  1. Press and hold the (power) button for about 2 seconds or more until the indicator (blue) turns off.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-26

Hint:

You can also turn off the headset with the “Sony | Headphones Connect” app.

How to make a wireless connection to Bluetooth devices

You can enjoy music and hands-free calling with the headset wirelessly by using your Bluetooth device’s Bluetooth function.

Pairing

To use the Bluetooth function, both of the connecting devices must be registered in advance. The operation to register a device is called “pairing”.
Pair the headset and the device manually.

Connecting to a paired device

Once a device is paired, it is not necessary to pair it again. Connect to devices already paired with the headset using the methods necessary for each device.

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. https://rd1.sony.net/help/mdr/hpc/h_zz/Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-27

Note:

  • The connection with some smartphones and iPhone devices may become unstable when connecting using the “Sony |Headphones Connect” app. In that case, follow the procedures in “Connecting to a paired Android smartphone”, or “Connecting to a paired iPhone ” to connect to the headset.

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.
Before starting the operation, make sure of the following:

  • The Android smartphone is placed within 1 m (3.2 ft) of the headset.
  • The headset is charged sufficiently.
  • The operating instructions of the Android smartphone are in hand.
  1. Enter pairing mode on this headset.
    Turn on the headset when you pair the headset with a device for the first time after you bought it or after you initialize the headset (the headset has no pairing information). The headset enters pairing mode automatically. In this case, proceed to step.
    When you pair a second or subsequent device (the headset already has pairing information for other devices), press and hold the (power) button for about 5 seconds or more to enter pairing mode manually.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-26 The indicator (blue) repeatedly flashes twice in a row. You will hear the voice guidance say, “Pairing”.
  2. Unlock the screen of the Android smartphone if it is locked.
  3. Find the headset on the Android smartphone.
    1. Select [Settings] – [Device connection] – [Bluetooth].
    2. Touch the switch to turn on the Bluetooth function.
    3. Touch [WH-CH720N].

      If Passkey* input is required, input “0000”.
      The headset and smartphone are paired and connected with each other.
      You will hear a notification sound indicating that the connection is established.
      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. For more details, refer to the operating instructions supplied with the Android smartphone.
  • To delete all Bluetooth pairing information, see “Initializing the headset to restore factory settings”.

Note:

  • If pairing is not established within 5 minutes, pairing mode is canceled. In this case, turn off the power and start the operation again from step.
  • Once Bluetooth devices are paired, there is no need to pair them again, except in the following cases:
    • Pairing information has been deleted after repair, etc.
    • When a 9th device is paired.
    • The headset can be paired with up to 8 devices. If a new device is paired after 8 devices are already paired, the registration information of the paired device with the oldest connection date is overwritten with the information for the new device. When the pairing information for the headset has been deleted from the Bluetooth device.
    • When the headset is initialized.
    • All of the pairing information is deleted. In this case, delete the pairing information for the headset from the connected device and then pair them again.
  • The headset can be paired with multiple devices, but can only play music from 1 paired device at a time.

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.
Before starting the operation, make sure of the following:

  • The iPhone is placed within 1 m (3.2 ft) of the headset.
  • The headset is charged sufficiently.
  • The operating instructions of the iPhone are in hand.
  1. Enter pairing mode on this headset.
    Turn on the headset when you pair the headset with a device for the first time after you bought it or after you initialize the headset (the headset has no pairing information). The headset enters pairing mode automatically. In this case, proceed to step.
    When you pair a second or subsequent device (the headset already has pairing information for other devices), press and hold the (power) button for about 5 seconds or more to enter pairing mode manually. Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-26The indicator (blue) repeatedly flashes twice in a row. You will hear the voice guidance say, “Pairing”.
  2. Unlock the screen of the iPhone if it is locked.
  3. Find the headset on the iPhone.
    1. Select [Settings].
    2. Touch [Bluetooth].
    3. Touch the switch to turn on the Bluetooth function.
    4. Touch [WH-CH720N].

      If Passkey* input is required, input “0000”.
      The headset and iPhone are paired and connected with each other.
      You will hear a notification sound indicating that the connection is established.
      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 the step
      * A Passkey may be called “Passcode”, “PIN code”, “PIN number”, or “Password”.

Hint:

  • The operation above is an example. For more details, refer to the operating instructions supplied with the iPhone.
  • To delete all Bluetooth pairing information, see “Initializing the headset to restore factory settings”.

Note:

  • If pairing is not established within 5 minutes, pairing mode is canceled. In this case, turn off the power and start the operation again from step.
  • Once Bluetooth devices are paired, there is no need to pair them again, except in the following cases:
    • Pairing information has been deleted after repair, etc.
    • When a 9th device is paired.
      The headset can be paired with up to 8 devices. If a new device is paired after 8 devices are already paired, the registration information of the paired device with the oldest connection date is overwritten with the information for the new device.
    • When the pairing information for the headset has been deleted from the Bluetooth device.
    • When the headset is initialized.
      All of the pairing information is deleted. In this case, delete the pairing information for the headset from the connected device and then pair them again.
  • The headset can be paired with multiple devices, but can only play music from 1 paired device at a time.

Disconnecting Bluetooth connection (after use)

  1. Disconnect the Bluetooth connection by operating the Bluetooth device. You will hear a notification sound.
  2. 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.

What is noise canceling?

The noise canceling function generates antiphase sound against outside surrounding noises (such as noises in vehicles or noises from indoor air conditioners) to reduce the surrounding noises by canceling them out.

Note:

  • Depending on the type of noise or if it is used in a very quiet environment, you may not feel the effect of noise canceling, or you may feel that some noise is increased.
  • When you are wearing the headset, depending on how you wear the headset, the effect of noise canceling may be decreased or a beeping sound (feedback) may be heard. In this case, take off the headset and put it on again.
  • The noise canceling function works primarily on noise in the low frequency band such as vehicles and air conditioning. While noise is reduced, it is not completely canceled.
  • When you use the headset in a car or a bus, noise may occur depending on street conditions.
  • Mobile phones may cause interference and noise. Should this occur, move the headset further away from the mobile phone.
  • Do not cover the microphones on the left and right units of the headset with your hand, etc. If they are covered, the effect of the noise canceling or the 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.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-29 A: Microphones (left, right)

Using the noise-canceling function

If you use the noise canceling function, you can enjoy music without being disturbed by ambient noise.

  1. Turn on the headset.
    You will hear a notification sound indicating that the headset is turned on.
    When you use the headset for the first time after purchase or just after initializing the headset, the noise canceling function is turned on automatically when you turn on the headset. Any changes made to the settings are retained from this point on.
  2. Press the NC/AMB (noise canceling/Ambient Sound Mode) button to change the settings of the noise canceling function.Sony-WH-CH720N-Wireless-Bluetooth-Headphones-User-Guide-30 Each time the button is pressed, the function switches as follows. Ambient Sound Mode: ON

    You will hear a notification sound.

    Noise-canceling function: ON You will hear a notification sound.

Specifications

Headset

  • Power source:
    DC 3.85 V: Built-in lithium-ion rechargeable battery
    DC 5 V: When charged using a USB
  • Operating temperature:
    0 °C to 40 °C (32 °F to 104 °F)
  • Charging time:
    Approx. 3.5 hours
    (About 60 minutes of music playback is possible after 3 minutes of charging. About 4.5 hours of music playback is possible after 10 minutes of charging.)Note: Charging and usage hours may be different depending on the conditions of use.
  • Charging temperature:
    5 °C to 35 °C (41 °F to 95 °F)
  • Mass:
    Approx. 192 g (6.8 oz)
  • Impedance:
    325 Ω (1 kHz) (when connecting via the headphone cable with the headset turned on) 31 Ω (1 kHz) (when connecting via the headphone cable with the headset turned off)
  • Sensitivity:
    108 dB/mW (when connecting via the headphone cable with the headset turned on) 99 dB/mW (when connecting via the headphone cable with the headset turned off)
  • Frequency response:
    7 Hz – 20 000 Hz (JEITA)
    (when connecting via the headphone cable with the headset turned on)

Communication specification

  • Communication system:
    Bluetooth Specification version 5.2
  • Output:
    Bluetooth Specification Power Class 1
  • Maximum communication range: Line of sight approx. 10 m (32.8 ft)1)
  • Frequency band:
    2.4 GHz band (2.400 0 GHz – 2.483 5 GHz)
  • Compatible Bluetooth profiles2):
    A2DP
    AVRCP
    HFP
    HSP
  • Supported Codec3):
    SBC
    AAC
  • Transmission range (A2DP):
    20 Hz – 20 000 Hz (Sampling frequency 44.1 kHz)

FAQS About Sony WH-CH720N Wireless Bluetooth Headphones

Do Sony WH CH720N touch controls exist?

Users looking for a cozy, fashionable pair of wireless headphones with noise-cancelling technology should strongly consider the Sony WH-CH720N. The headphones are perfect for usage in a range of scenarios thanks to their lengthy battery life, touch controls, and voice assistant compatibility.

How long do Sony Bluetooth headphones last on a charge?

That is as much as 24 hours of uninterrupted listening. Even longer when noise cancelling is turned off: 8 hours of power on a full charge, plus an additional 3 charges from the charging case for a total playtime of up to 32 hours.

How long do Sony headphones require to charge?

Connect an AC outlet and the headset. To connect the headset to an AC outlet, use the USB Type-C cable that is included and a USB AC adapter that is available separately. The headset’s red indicator begins to glow. The indication (red) automatically turns off once charging is finished, which takes roughly 3 hours (*).

How long does it take a Sony headphone to charge?

between two and three hours

How long will a full charge of Sony headphones last?

You’ll have ample juice for even lengthy journeys away with a battery life of up to 35 hours. If your headphones are nearly out of juice, a short 10-minute charge using a Type-CTM cable will extend their playtime by up to 90 minutes.

Android and Sony WH CH720N connectivity?

The headphones will automatically enter pairing mode when you switch them on for the first time. The WH-CH720N can be connected to your device in three different ways. Simply place your headphones in pairing mode close to your Android phone, and Fast Pair will instantly link the two devices.

How is my Sony CH720N recharged?

A built-in lithium-ion rechargeable battery powers the headset. Charge the headset before use using the USB Type-C connector that is included. The headset should be connected to an AC outlet.

What is the CH720N battery life?

We measured slightly over the 35 hours that they are supposed to last with their ANC on. You can work for up to 50 hours nonstop if you switch off their ANC.

Why won’t my WH ch700 charge?

Verify that the headset and PC are securely linked by the micro-USB cord. A secure connection between the USB AC converter and the AC outlet is a must. Verify sure the PC is on. Verify that the computer is not in hibernation, standby, or sleep mode.

Has Sony WH-CH720N noise-cancelling technology?

The same V1 chip found in the M5 powers both active noise cancellation (ANC) and overall sound quality in the WH-CH720N.

Sony CH720N sound leakage?

Although the ANC is excellent for the price, it does let in sound from all directions.

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