Jacques Lemans Men's Automatic Stainless Steel and Leather Dress Watch(Model: 861C-ABT06M) Quality automatic movement; functions without a battery; powers automatically with the movement of your arm Sapphire crystal Case diameter: 39 mm Stainless-steel case; blue dial; date function; chronograph functions Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion