See also:

Battery
WARNING ● Before beginning work on or near any battery, be sure to extinguish all cigarettes, matches, and lighters. Never expose a battery to an open flame or electric sparks. Batteries gi ...

Volume control switch
Press the switch to the “+” side to increase the volume. Press the switch to the “−” side to reduce the volume. A number indicating the volume will be shown on the audio display. ...

Repeating
To repeat a track/file, briefly press the following button (repeat button) while the track/file is playing. Each time you briefly press the button, the mode changes in the following sequences ...