Sony WH-1000XM2/B Help Manual page 67

To decrease the volume: Swipe down repeatedly until the volume reaches the desired level.
If you hold your finger to the touch sensor control panel after swiping up or down, the volume continues to
change.
When the volume reaches the maximum or minimum, an alarm sounds.
Hint
The headset supports SCMS-T content protection. You can enjoy music, etc., from a device such as a mobile phone or portable
TV that supports SCMS-T content protection.
Depending on the BLUETOOTH device, it may be necessary to adjust the volume or set the audio output setting on the
BLUETOOTH device.
Volume during a call and volume during music playback can be adjusted independently. Changing the call volume does not
change the volume of music playback, and vice versa.
Note
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
About the Automatic AI noise canceling function
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