Attention should be paid to the electronic watch: press the button not too hard to avoid failure; The LCD panel needs to be renewed after five to seven years of use; The battery should be taken out in time when it has no power to prevent the fluid from corroding the core. If the light is not on, the button is out of order, or there is a sudden large error in timing, it should be repaired in time. It may be due to poor contact or removal of the component solder joint. The waterproof performance of electronic watches, especially digital electronic watches, is generally poor. Although some have the words "waterproof" printed on the manual or back cover, try to avoid contact with water. The structure of electronic watch is different from that of mechanical watch. It is electronic circuit and electronic components. In case of water, it will be "catastrophic" and make the whole watch scrapped. In particular, the LCD panel and the integrated line are not only afraid of water, but also suffer from moisture. They will fail over time. Therefore, it is best to take off your watch when washing your face and clothes. Avoid splashing rain when it rains. If water is found in the electronic watch or moisture is accumulated on the inner wall of the watch cover, immediately send it to the watch repair shop for water removal and moisture removal.

Timing instruments of mechanical vibration system, such as pendulum clock, pendulum clock, etc. Its working principle is to use a vibration system with constant period and continuous vibration. Multiply the vibration period during vibration by the number of vibration times, which is equal to the elapsed time. Time=the vibration period of the watch × Number of vibrations. It is generally composed of energy, gear train, escapement mechanism, vibration system, pointer mechanism and additional mechanism.