Note: watch can be waterproof, but please do not swim or put into the water. Time and date setting In standby mode, press A to display the time, Press B to enter the hour set, the hour will flash, press A to adjust the hour: Press B to enter minutes setting, minutes will flash, press A to adjust minute: Then press B to enter the month set, the month will be flashing, according to A adjustment month: Press B to enter the date set, the date will flash, press A to adjust the date: Then press B to enter the year set, the year will be flashing, according to A adjustment year: Then press B to enter the 12/24 system settings, 12/24 will flash Press A to adjust the system, and then press the B button to return to the normal time section. Without any operation, 3 seconds after the automatic sleep