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Time set: when the normal display, according to the M key 3 times, enter the time adjustment stato (second in flash), press the S key is proofreading seconds zero. 
Press the R key, hourly flash, and check the hour by pressing the S key. The same method is used to adjust the minutes, months, dates, and weeks according to the R key respectively.(the S key is adjustable when flashing). After all the adjustment, press the M key to return to the normal display state 1 times.

Alarm settings: under normal display state, press M button to adjust the alarm state to 2 times (AL for a time, then press R button to adjust hour and minute respectively, (flashing when pressing S key can be adjusted). After setting up, press the M key to return to the normal display state

Alarm clock switch and whole point ringtone settings: under normal display state, press M button? adjust to the alarm clock state 2 times (AL), press S button, you can select the alarm clock function to turn on /off, and the whole ringtone opens/closes. After setting up, press the M key to return to the normal display state.

Stopwatch method of use: in the normal display state, press the M button 1 times to enter the stopwatch state, press R to clear numbers, press the S button to start the stopwatch, press a S butto the stopwatch stopped. Zero at the R key number.

12/24 hour state settings: when normal display, press the M key 3 times, enter the time adjustment state (seconds flickering), then pressRbutton 1times to enter the hour adjustment state, then press the S key to adjust the 12/24 hour system (H is 24 hours system). Set up and then return to normal time at the M key 1 times.
Key light: when the L key, the light will be lit. In particular, long term use of light will consume mor batteries. The battery model of this type of electronic meter is CR2032

• Please tear off the screen protection film before use. otherwise it seems not clear.
• L=LIGHT M=MODE S=START R=RESET.
• This watch is only waterproof for life (like：Splash, rainy).Not suitable for prolonged immersion in water or swimming.

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