LED
MIC
Charge connect
MFB Key
Power On&Power Off
Press and hold
MFB for 4 seconds
Blue LED flash once
Key and connect
Power on: Press and hold MFB for 4 seconds when earphone without power，
the bluetooth headset speaker makes the boot prompt,blue LED flash once,after turn on and
automatically enter the matching mode,red and blue lights alternate quickly.
Power off:Press and hold MFB for 4 seconds when earphone under standby status，
red LED flash once
V+ Key
V- Key
