- Dial/Answer/Hang up button; Pause/Play button Power button; .
- + Volume + (next song), press once to next song,long press and not release to increase volume, and when volume comes to maximum, there will be deep tone;
- - Volume - (previous song), press once to the previous song, llong press and not release to reduce volume, and when volume comes to minimum, there will be deep tone.
- Indicator light .
- LED light on-off button
- USB charging interface
- MIC
- Line in jack.
- Line cable triple plug, insert in headset Line interface;
- One mute button
- Microphone
- Slide voice controllor
- Line quadri plug, applies to the 3.5 quadrupoles single jack audio device such as mobile phone, tablet PC, notebook computer, etc.
great