Boult Audio ZCHARGE - Device Operations; Power on;off; Call Answer

IMPORTANT FEATURES
Power on\off
Power on:- Press and hold the multifunction (MFB) for 3s until
the BLUE light ashes.
Power off:- Press and hold the (MFB) for 5s till the RED light on for 2s.
Call answer:- answer by your phone or press the MFB.
Call answer
Call End
Call End:- End by your phone or press the MFB.
Press