BRAND NEW: WOLF Windsor Double Winder With Cover black. Retro shapes and colors make Windsor a perfect companion for your timepieces. The Windsor double winder features chrome finished hardware, smooth black vegan leather, purple textured silk lining and 2 winding modules. Patented technology counts the turns per day, ensuring your timepiece is on time, every time. 29.2cm L x 20.3cm W x 13.3cm H * Patented Innovation - Every WOLF winder counts the precise number of rotations. All other winder estimate the number of rotations. * Rotation: 10 second start delay, 900 TPD (Turns Per Day), patented rotation programs - Intermittent rotation with pause and sleep phases pre-programmed. Double the amount of TPD by selecting bi-directional * Directional Settings: Clockwise, Counter Clockwise and Bi-directional * Battery Option: Option to run the unit on AC power (universal adapter included) or D-Cell/Lithium batteries (not included) * Storage: 2 winding modules WHY USE A WATCH WINDER? An automatic watch has a mechanism that requires regular motion to keep the inner spring constantly charged. This motion is usually provided as it is worn. Once removed from the wrist the stored energy will only run for 24-72 hours, depending upon the model, then the watch will need to be manually rewound and reset. Many automatic watches have additional features, or 'complications' - date/lunar phase/world time etc. so the task of rewinding and recalibrating a watch if it runs down is best avoided. Furthermore, watches of such calibre are precision instruments and like all thoroughbreds they actually benefit from exercise - if left unwound for long periods, internal lubrication can be lost from critical areas which will eventually lead to excessive wear on components and subsequent lack of accuracy.