Men's Quartz Watch 3ATM Waterproof Silicone Belt Hollow Cool Stylish Man Clock Watches

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.