Baume & Mercier Men's 8732 Classima Automatic Chronograph Watch Quality Swiss Automatic movement; Functions without a battery; Powers automatically with the movement of your arm Scratch-resistant-sapphire crystal Case diameter: 41.7 mm Stainless-steel case; White dial; Date function; Chronograph functions Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion