5.
Press to select the previous track for playback in USB/microSD/BT mode.
6.
The key to stop/play in USB/TF/BT.
7.
Press to select the next track for playback in USB/microSD/BT mode.
8. MODE: Press once to cycle through connected devices (BLUETOOTH
– USB – microSD).
9. MUTE: Press to mute/unmute the sound.
10. VOL-: Press to reduce the volume.
11. VOL+: Press to increase the volume.
