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About adjusting the time: 1. Briefly press the watch and turn it on 2. After the number jumps, press and hold the watch button for three seconds to automatically jump to the "hour" setting. You can briefly press the watch button to increase and adjust the hours. After completing the hour setting, press and hold the watch button for three seconds to automatically switch to the "minute" setting. You can briefly press the watch button to increase and adjust the minutes. 4. After the adjustment is completed, there is no need to perform button operations. Wait for the watch to turn off the light naturally, and then press the watch again to display the set time parameters.