Sony WI-SP510 Help Manual page 71

A: Tactile dot
When the volume reaches the maximum or minimum, an alarm sounds.
Hint
The headset supports SCMS-T content protection. You can enjoy music and other audio on the headset 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 device.
The headset volume during a call and during music playback can be independently adjusted. 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)
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