Wolf Britsich Racing Single Watch Winder. Classic, different, unique and above all timeless. Dimensions: 19.6 cm L x 20.3 cm W x 22.86 cm H Patented innovation - Every WOLF winder counts the exact number of rotations. All other winders estimate the number of rotations Lock-in dynamic cuff: Patented lock-in dynamic cuff "locks" your watch into the rotator drum for a secure fit. Low density foam for all wrist sizes without putting pressure on your wristband. Exclusive: Back to start - your watch returns to the position it started in when the cycle is complete Quad angled cover Rotation options: 10 second start delay. Can be set between 300 and 1,200 TPD (rotations per day). Double the amount of TPD by selecting the bi-directional setting Directional settings: clockwise, counterclockwise and bidirectional Power reserve setting: 6 to 72 hours in increments of 6 hours Power reserve setting to accommodate watches with a power reserve, giving the watch time to release stored energy before the winding program begins Battery: Option to run on AC power (universal adapter included) or D-Cell/lithium batteries (not included). Other: Fluted bezel, available in green with gold or black with gunmetal hardware Storage: 1 watch