Wolf Design Double Winder (Module 1.5) with two independent rotators which allow for individual watch settings. A/C or battery powered. Smooth black leather with a magnificent black fabric interior. The design rationale for all Wolf Designs rotators is to wind the mainspring of a movement, and then 'sleep' for a period of allow the mainspring to release its tension. This is accomplished with a nominal amount of electrical energy being spent, and a premium placed upon reliability. Affordable luxury... The 1.5 series winders is a great winder for the new collector. the winder is wrapped in beautiful black leather with a black fabric interior. It will fit and wind virtually any brand of watch. 600 Turns Per Day. 10 second start delay. Clockwise, Counter-clockwise or Bi-directional rotation programs. Intermittent rotation with pause and sleep phases pre-programmed. Runs on either AC power or D-cell batteries.