Cartier Men's W10125U2 Must 21 Chronoscaph Stainless Steel and Black Rubber Chronograph Watch Precise cartier swiss-quartz movement Scratch-resistant sapphire crystal; brushed and polished stainless steel case; black rubber with stainless steel accent strap Chronograph functions with 30 minute, 60 second, 1/10 of a second sub dials; date function Black cartier logo dial with silver sub dials; luminous hands; magnified date window; cabochon screw down crown; roman numerals engraved on bezel Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving