Velleman BTSP1 Manual Del Usuario página 3

3. Description
1. speaker
2. microphone
3. LED
4. 5-pin USB charging socket
5. MODE button
6. MF button (multi-function button)
7. volume increase (V+)
8. volume decrease (V-)
4. Inserting and Charging the Battery
BTSP1_v3 3 VELLEMAN