Patented innovation: Every WOLF winder counts the precise number of rotations. All other winders estimate the number of rotations Lockin dynamic cuff: Patented lockin dynamic cuff ‘locks' your timepiece into the rotator drum for a secure fit. Lowdensity foam to accommodate all wrist sizes without putting pressure on your bracelet. Rotation options: 10second start delay. Can be set between 300 and 1,200 TPD (turns per day). Double the amount of TPD by selecting a bidirectional setting. Fluted bezel, lock and key security, Made with Vegan leather Approx. 15.75"L x 6.5"W x 13.25"H Wipe clean Imported.