Invicta Men's 'Corduba' Quartz Black-Ion-Plated-Stainless-Steel and Techno-Material Sport Watch(Model: INVICTA-4907) Quality Japanese-quartz movement Durable mineral crystal Case diameter: 53 mm Black-ion-plated-Stainless-steel case; black dial; date function Water resistant to 660 feet (200 M): suitable for recreational scuba diving