WOLF 270602 Heritage 4 Piece Watch Winder with Cover, Black 4 winding modules, glass cover, chrome finished hardware, lock in cuff Patented Innovation - Every WOLF winder counts the precise number of rotations. All other winder estimate the number of rotations. Pre-programmed - 900 turns per day. Directional Settings: Clockwise, Anticlockwise and Bi-directional Power Option: Runs on AC Universal Power adapator (included) 2 year Manufacturer warranty worldwide