TAG Heuer Men's WW2110.FT6005 Monaco II Automatic Watch Imported Quality Swiss Automatic Movement; Functions without a battery; Powers automatically with the movement of your arm Scratch-resistant sapphire crystal with sapphire exhibition back Case diameter: 37.5 mm Stainless-steel case; Black dial; Luminous hands and markers; Date function; Off-center seconds dial Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion