Top panel operation
1. Microphone 1 Input
2. Microphone 2 Input
3. Aux-in(3.5mm)
4. Micro SD Card input
5. USB Playing back
6. DC 9V charge.
7. Charging indicator(Red-charging, Green-Full)
8. Switch the Power on/off
9. Play/pause under USB/Micro SD/BT mode, and long press to get TWS function.
