Auto standby function
To keep the battery from draining, the headphones automatically turn off after no operations are performed or they are stationary* for at least 10 minutes. The default setting for the auto standby function is “on”.
The headphones are stationary when they have been placed on a surface such as a desk and are completely motionless.
Turning the auto standby function on and off
Press and hold the volume “-” button and call button together for approximately 1 second or more.
An alert sounds and the auto standby switches between on and off.
