China supply watch winder for automatic watch

The typical representative of the double-wheel non-reversal type of the watch winder is the perpetual movement core of Rolex. Rolex's perpetual movement core is converted to each other by two gears that are connected to the automatic rotor, that is, the red wheel. Both gears have a wheel with serrated teeth inside at the same time. What meshes with this saw-toothed wheel are the bumps on the red wheel mentioned above. Although the two red wheels rotate together when winding, in fact, only one of the internal saw gears actively and effectively drives the watch at a time. The winding gear of the chain gear.