WOLF ' Heritage' Automatic Watch Winder (Model: 270702) 6 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) The new design locks the cuff into the rotator drum for a secure fit. 2 year Manufacturer warranty worldwide