... . Press the arbitrary key and enter to normal work..3 Revise the password:Firstly, turn off the power, press 3 ... , 4 , 5 simultaneous (press all the time), then open the ... number of timesFirstly turn off the power , press1 , 3 simultaneous(press all the time), and then open ... on the wrist band, then turns on the power .2 .Press A or B working switch (3,4) ...