TAG Heuer Men's WJF211A.BA0570 Link Automatic Watch Quality Swiss Automatic Movement; Functions without a battery; Powers automatically with the movement of your arm Case diameter 38 millimeters, 12 millimeters thickness Stainless steel band with double locking fold-over-clasp-with-safety Small seconds sub-dial; sapphire crystal dial window; date window Water resistant to 660 feet (200 M): suitable for recreational scuba diving