WOLF 457156 Roadster Single Watch Winder with Cover and Storage, Black Roadster Watch Winder - Ebony Macassar faceplate, 1 winding module, 3 piece watch storage, locking glass cover, lock in cuff Patented Innovation - Every WOLF winder counts the precise number of rotations. All other winder estimate the number of rotations. Fully controllable from 300 to 1200 turns per day - Clockwise, Anticlockwise and Bidirectional Battery or Power Option with Universal Power adapator 2 year Manufacturer warranty worldwide. Watch Cuff - The cuff has been designed to fit bigger and heavier watches (up to 52mm case). The new design "locks" the cuff into the rotator drum for a secure fit