Zodiac Men's Swiss Automatic Stainless Steel and Leather Sport Watch(Model: ZO2002) Quality Swiss Automatic movement; Functions without a battery; Powers automatically with the movement of your arm Sapphire crystal Case diameter: 42 mm Stainless-steel case; Black dial; Date function; Chronograph functions Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving