TAG Heuer Men's CJF2115.BA0576 Link Automatic Chronograph Watch Quality Swiss Automatic Movement; Functions without a battery; Powers automatically with the movement of your arm Scratch-resistant sapphire crystal Case diameter: 42 mm Stainless-steel case; Gray dial; Luminous hands and markers; Date function; Chronograph functions; Tachymeter function Water resistant to 660 feet (200 M): suitable for recreational scuba diving