TAG Heuer Women's 'Formula One' Quartz Stainless-Steel-Ceramic Sport Watch, Color:Silver-Toned (Model: CAH1210.BA0862) Imported Quartz movement Durable sapphire crystal protects watch from scratches Case diameter: 41 mm Stainless-steel case Water-resistant to 660 feet (200 M) Water resistant to 660 feet (200 M): suitable for recreational scuba diving