WOLF 457256 Roadster Double Watch Winder with Cover and Storage, Black Roadster Watch Winder - Ebony Macassar faceplate, 2 winding modules, 3 piece watch storage and travel case, 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 Size : 13 l x 8 w x 9 h inch 2 year Manufacturer warranty worldwide