Function overview1. LED display time, year, date, stopwatch2.12 hour clock3. Single button operation4. Point-saving mode: no button operation within 3 seconds, the screen automatically turns off the display5. Press the A key to turn on the light to display the time, and press the A key again to display the date;6. Long press the A button and keep it, after a few seconds, the hour will jump, press the A button to adjust the hour (add one hour for each press)(The letters under the hour represent morning and afternoon, "P" represents afternoon, and "A" represents morning);7. After adjusting, press and hold A for a long time, after a few seconds, the minutes will jump, press the A key to adjust the minutes;8. After adjusting the time, press and hold the A button, after a few seconds, the year will start to jump, press the A button to adjust the year.9. After adjusting the year, press and hold the A key. After a few seconds, the month begins to jump, press the A key to adjust the month;10. After adjusting the month, press and hold the A button. After a few seconds, the number of the date will jump. Press the A button to adjust the date.11. When adjusting the time and switching, it must be done while the light is still flashing, if it is slow,If the light goes out, it will need to be readjusted.In addition, the 18:88 string of numbers will be displayed before the time is turned on or before the light is turned off. This is a light test function.All the lights are on again, and see if there are any damaged lights. This is normal.Package Content: 1pcs Watch(without retail package)