WOLF 454011 Module 4.1 Watch Winder with Cover, Black The Module 4.1 has interlocking functionality that can be joined together as your watch collection grows - 1 winding module, glass cover, connector piece and bridal cable. 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 Power Option: Runs on AC Universal Power adapator (included) 2 year Manufacturer warranty worldwide