Wooden watch winder motor box

Mechanical watches are divided into automatic mechanical watches and manual mechanical watches. The kinetic energy of manual mechanical watches comes from winding. Automatic mechanical watches rely on people's usual movement to drive the automatic rotor on the watch movement to wind the watch, but only relying on arm swings is not enough. In order to provide stable energy, automatic mechanical watches must first wind the watch when there is no energy, and then rely on the swing of the arm to maintain the kinetic energy of the watch.