See also:

Models with Hands-free system
Press this button for more than 1.5 seconds if you wish to immediately cut the volume to zero. The audio display will show “MUTE”. If you press the button for more than 1.5 seconds again, the origin ...

When there is an upward slope at the back
1) 3 feet (1 m) The distance on the screen looks farther than the actual distance. ...

Adjustable level of each mode
*: For type A and B audio, AUX volume can be adjusted only when an AUX audio product is connected. ...