Corum Men's Automatic Stainless Steel and Leather Dress Watch(Model: 082-157-47-F701-PIRR) Quality Automatic movement; Functions without a battery; Powers automatically with the movement of your arm Scratch-resistant-sapphire crystal Case diameter: 45 mm Stainless-steel case; Corum design dial; Date function Water resistant to 165 feet (50 M): suitable for swimming and showering