Many young people like to wear digital electronic watches, which are loved by people because of their simplicity and reliability, accurate timing and practical functions. But what about a digital electronic watch?

Common digital electronic watches generally have four buttons. Upper left LIGHT (night vision light); lower left MODE (function key); upper right ST/STOP (display date); lower right RESET (display preset alarm time)
Press the "LIGHT" button once, the light will light up, which is convenient to see the time in the dark place; press the "MODE" button once to display the timing, press it again to display the alarm setting, and press it again to display the time and date settings; press Press and hold "ST/STOP" to display the date; press and hold "RESET" to display the preset alarm time.
  Press and hold "RESET", press "ST/STOP" at the same time and release at the same time, or press "RESET" and "ST/STOP" at the same time and release at the same time to enable/disable the alarm.