PS is an energy-saving skill of Casio watches. Turn off the lights and sleep at night, and the watch will automatically enter the PS "sleep" state. At this time, the blood glucose meter will automatically turn off the LCD display and run at the lowest power consumption. When you wear it again during the day, it will automatically wake up and enter a normal working state.

The working principle of watches, watches are precision instruments used to display time. The principle of this instrument is to use a vibration system with constant period and continuous vibration as the standard.

If we know the time (vibration period) required for a vibration system to complete a complete watch vibration and calculate the vibration times, then the time after so many vibrations is equal to the vibration period multiplied by the vibration times. That is, time = vibration period × vibration times.

Extended data:

system of selection

1, check the appearance

The appearance can be checked from the aspects of case, mirror, dial and pointer.

2. Sensitivity

The sensitivity of a watch refers to whether the balance wheel in the watch starts early or late. One of the inspection methods is to gently shake the watch that has not been wound and stopped moving, and observe the movement of the second hand with the help of the shaking force;

If the second hand doesn't go in a short time, it means that this watch can be completely loosened after it is fully wound, and the sensitivity is relatively high; If the second hand keeps moving for a long time, it means that the watch can't be completely loose after being fully wound, the sensitivity is not high, or the internal parts are faulty.

3. Efficiency

Normal watches, when the winding shaft rotates, feel very loose at first, and gradually become more and more tight. When it can no longer rotate forward, it means that the spring has been completely tightened.

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