TAG Heuer Men's WJF2110.BA0570 Link Automatic Stainless Steel Watch Quality Swiss Automatic Movement; Functions without a battery; Powers automatically with the movement of your arm Scratch-resistant sapphire crystal with anti-reflective treatment on both sides Case diameter: 40 mm Stainless-steel case; Black dial; Luminous hands and hour markers; Date function Water resistant to 660 feet (200 M): suitable for recreational scuba diving