TAG Heuer Men's WJF2011.BA0592 Link Calibre 5 Day-Date Automatic 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: 42 mm Stainless-steel case; Silver dial; Luminous hands and hour markers; Day-date function Water resistant to 660 feet (200 M): suitable for recreational scuba diving