6.1 Short press the Mute button to mute the microphone.
6.2 Long press the mute key for about 2s to switch VoiceCap mode.
Voicecap function for automatic cancellation of surrounding noise,
only pick up the voice within a radius of 1.5 meters. Speaker volume is
also automatically adjusted according to the surrounding noise.
The VoiceCap function is only recommended for use in open space.
When the volume increase + /decrease -, the light circle will turn on/off
one by one. When adjustement completed, the light turns off after 4 seconds.
Press button to answer phone call，press button to end phone call.
Volume control function
5.
Answer /end phone call
4.
When device is not connected to Bluetooth or USB more than 15 minutes,
it will shut down automatically.
Auto Power Off
7.
When the USB is disconnected, short press the power button ,
the green circle light will indicate the battery level.
Battery indicator
8.
Mute
6.
