Errors of mechanical watches Mechanical watches are affected by the structural characteristics, materials, friction and fatigue of the spring, the output torque from strong to weak, and the friction generated by the spring and gear during the transmission of the force distance, which will affect the time of the watch.

Accuracy. In addition, climate temperature, gravitation, magnetic field, regional environment and location also affect the normal operation of the clockwork pendulum clock. The current quartz watch overcomes the weakness of the mechanical skeleton watch, and uses the extremely stable high-frequency vibration of the quartz crystal as the time reference. The daily time error of quartz watches is generally within ± 0.5s (premium), and the daily time error of mechanical watches is within ± 15s / d-± 120s / d is even greater.

Take some famous foreign brands as examples: factory buildings and distributors The general standard requirement is that the weekly time difference is less than ± 45s / d, mid-range brands generally reach + -30s to reach the factory sales standard, and high-end ones such as Rolex and Omega can generally reach ± 15s / d to reach the sales standard