Stuhrling Original Men's Automatic Stainless Steel and Leather Sport Watch(Model: 27CC.3315E59) Quality Automatic movement; Functions without a battery; Powers automatically with the movement of your arm Synthetic-sapphire crystal Case diameter: 33 mm Stainless-steel case; Cinnamon-dial dial; Day-date-month-and-year functions Water resistant to 165 feet (50 M): suitable for swimming and showering