LED-suuri näyttö urheilu muodikas ja yksinkertainen neliönmuotoinen astronauttikello, arvokas opiskelijaelektroninen kello

instructions 1. Press the button on the right once to turn on the light and display the time. Press it again to display the date; 2. When the light is on, hold your finger on the button for 3 seconds, and the hour will flash. At this time, adjust the hour. Press once to increase the hour. 3. After adjusting the hour, press the button for 3 seconds, and the minute will flash. At this time, adjust the minute. Press once to increase the minute. 4. After adjusting, wait for a few seconds and return to the time display interface. If there is no operation for 3 seconds, enter power-saving mode.