TAG Heuer Men's CAF2011.BA0815 Aquaracer Automatic Chronograph 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 Case diameter: 44.2 mm Stainless-steel case; White dial; Luminous hands and hour markers; Unidirectional bezel; Day-date function; Chronograph functions Water resistant to 990 feet (300 M):suitable for scuba diving to a depth of 30 meters for up to 2 hours