EVISU Men's Swiss Automatic Stainless Steel and Leather Casual Watch, Color:Black (Model: EV-7002-05) Marine grade surgical stainless steel case and case back Precision Swiss 18 jewel automatic movement Genuine Italian leather strap plus a nylon strap Super Luminova on hands and dial index Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving