*Performance: The mechanical watch winds automatically, simulating the walking posture and normal exercise state Note: it must be a mechanical watch with automatic winding function. *Plug in version: plug in the power cord and use it directly.Two swing modes: swing back and forth, swing left and right.Note: It must be a mechanical watch with self winding function. *Safety: Do not worry about the watch being magnetized, as long as it is more than 5cm away from the magnetic field, it is safe enough. *Noiseless: The mechanical watch self oscillating device has a silent, which does not affect sleep, and the precision bearings are noiseless. *Great Gift Idea: Watch Winding Machine makes a great gift. It is a great gift for family, friends or business associates on birthdays, Thanksgiving, Christmas, Valentine's Day, birthdays or celebrations.