1. In normal time mode, the screen displays hours / minutes / seconds / days. Press S4 to check the month / day. Press S2 once to enter the stopwatch mode. Press S2 twice to enter the alarm setting mode. Press S2 three times to enter the time. Set mode, press S3 to view alarm mode.
2. In stopwatch mode, press S4 to start / end the timing, press S3 to segment the timing, the timing is complete, press S3 to return to zero.
3. In the alarm setting mode, press S3 to switch the hour / minute adjustment order, press S4 to adjust, and press S2 to return after the alarm time is set.
4. In normal time mode, press and hold S3, then press S4 to turn on / off the alarm at the same time.
5. In the time setting mode, press S3 to switch the adjustment order of seconds / minutes / hours / months / days / days, and press S4 to adjust. Press S2 to return after setting.
6. In any mode, press S1 to turn on the backlight. Press and hold S1 to hold, the colorful backlight exchange flashes.
When the display is dim, please replace the battery of the same type.
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