US Patent 7927009 Watch winder

A watch winder comprising plural watch winder units and a power supply. The plural watch winder units are assembled by connectors in such a manner that the watch winders units are electrically connected to one another, and the power supply is electrically connected to one of the watch winder units to supply power to all the electrically-connected watch winder units. By such arrangements, the respective watch winder units are not required to be provided with one power supply, thus saving the manufacturing cost, satisfying the requirements of environmental protection, and the watch winder units can be assembled as desired.