1. FUNCTION KEY : PRESS SHIFT PLAY MODEL TO BLUETOOTH/ TF CARD LINE IN 2. PREVIOUS SONG : PRESS PLAY PREVIOUS SONG, PRESS AND HOLD TO REDUCE VOLUME 3. ANSWER/ PAUSE/ CALL : SHORT PRESS PLAY OR PAUSE MUSIC DOUBLE CLICK UNDER BLUETOOTH STATUS, PRESS TWO TIMES TO CALL BACK TO NEAREST CALL CONTACK, PRESS FORCE TO QUIT BLUETOOTH STATUS 4. NEXT SONG/ INCREASE VOLUME : PRESS TO PLAY NEXT SONG PRESS AND HOLD TO INCREASE VOLUME 5. POWER INDICATOR : LIGHT ON WHEN DEVICE UNDER CHARGING 6. MICROPHONE : ANSWER PHONE CALL OR USE SIRI VIA MICROPHONE WHEN BLUETOOTH CONNECTED 7. TF CARD SLOT : PLUG TF (MICRO SD CARD) IN TO PLAY MUSIC IN TF CARD 8. AUX IN : PLAY MUSIK FROM OTHER DEVICE LIKE MOBILE PHONE BY CONNECTING WITH 3.5MM JACK TO JACK CABLE 9. RESET : RESET DEVICE 10. CHARGING PORT : PLUG MICRO USB CABLE FOR CHARGING