User's Manual

2.Primarily operation
Button
Function
Primarily operation
Multi-Function Button
(MFB)
Power on/off
Press and Hold the MFB for 3 seconds turn on/off M91.
Pairing model
In off status, press and hold MFB for 6 seconds until red
and blue LED flash alternatively.
Play/Pause
music
In playing the music, short press the MFB to play/pause
the music.
Phone function
Incoming call, short press MFB to answer/end the call;
press and hold the MFB to reject the call.
Volume up/down
While on a call or playing music, short press the volume up/down button, it
will increase or decrease volume when playing music or on a phone call.
Up/Down music
In playing music, press and hold the “+” or “-” to switch up/down music.
Last Number Redial
In standby status, press MFB twice.
Voice dialing
Short Press and hold MFB button 2 seconds
Sound switch
While on a call, Press and hold MFB button.