1.
Microphone
2.
Bass boost button
3.
Answer / hang-up button
Double press: call last number
Short press: Play/Pause
4.
Up
Short press: Next song
Long press: Increase volume
5.
Down
Short press: Previous song
Long press: Decrease volume
6.
USB power input: 5V DC
Note: Using a higher voltage will
destroy the device
7.
AUX-out
Plug into your car's audio system
(AUX-in)