To provide a device capable of winding up the mainsprings of self-winding wrist watches even when they are not used, by repeating forward and reverse rotations by an automatic controller.

By fixing self-winding wrist watches onto sponges 3 at the tips of the rods 2 of a rotary table 1, and repeating forward rotation - stop - reverse rotation - stop by the automatic controller 7, the mainsprings of the self-winding wrist watches are surely wound up. Moreover, the number of settable self-winding wristwatches can be increased easily by increasing the diameter of the rotary table where the rods are set.