How to set the time of LED BAND : 1) press button A for 3 second to enter to set hour mode, then press button A for one second to set hour. 2) after setting hour, press button A for 3 second to enter to set minute mode, then press button A for one second to set minute. 3) after setting minute, press button A for 3 second to enter to set month mode, then press button A for one second to set month. 4) after setting month, press button A for 3 second to enter to set date mode, then press button A for one second to set date, 5) after setting date, press button A for 3 second to enter to set year mode, then press button A for one second to set year.