Swiss Legend Men's 30021-BB-01 Ambassador Black Dial and Black Silicone Watch Never miss a moment of the action with this Swiss Legend timepiece, whose screw-down crown is locked in tight, courtesy of a protective clasp that locks over the crown. Swiss quartz movement Mineral crystal black ion-plated stainless steel case Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving