Black Color Single Automatic Watch Winder with Built-in Smart IC Timer for most kinds of automatic watches keeps your automatic timepiece wound and ready to wear when you need it. World’s finest watches, from Rolex to Patek, use Automatic movement. These complex timepieces need normal everyday movement in order to run, and will shut off when not worn. So the solution is to put your watch on an Automatic Watch Winder which will mimic everyday movement in order to keep your watch wound and ready to go. The silent motor with directional controls keeps almost any automatic watch wound. The Built-in Smart IC timer will control the winder so it will rotate 1 hour and rest 3 hours. Our “insert-type” adjustable watch mounting system ensures the adequate- mounting of your watch so it will never detach your valuable watch from the winder during its operation which comes with detachable top for large watches. The high quality materials and craftsmanship goes into each and every winder. 110VAC adaptor included. Case Size D6″ x W 4.5″ x H6″ inches Plexiglas cover window : 4.5″ x 4.5″ Weight 2 lb. Make sure you always buy a winder that is backed by a strong company that is willing to stand behind their product. Diplomat is that type of company, which is why they offer a 1 year warranty on all of their winders.