Tommy Hilfiger Women's 1780791 Automatic Stainless Steel Leather Strap Watch Quality Automatic movement; Functions without a battery; Powers automatically with the movement of your arm Strong mineral crystal protects dial from scratches and dings Case diameter measures 36.6 mm without crown Stainless-steel case; White dial Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion