Swiss Legend Men's 50029-BB-01-AAN01M Glamorous Collection Automatic Black Ion-Plated Watchwith Winder Precise 18-jewel Swiss automatic movement; functions without a battery; powers automatically with the movement of your arm Scratch-resistant sapphire crystal; polished black ion-plated stainless steel case; black crocodile strap Date function Black onyx dial with silver-tone hands and roman numerals; luminous dot hour markers; screw-down crown; exhibition case back; watch winder included Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving