This Wolf Designs Viceroy single watch winder features black vegan leather. The winding module can be programmed to turn from 300 to 1,200 times per day with clockwise, counterclockwise, or bi-directional rotation. Functions include an 6 to 72 hour power reserve setting and a 10 second start delay. This winder has storage for three watches (up to 52mm case). The winder is powered by AC power with the included adaptor, or by D-Cell/Lithium batteries. Batteries not included.