This 42mm Sea-Chron features a stainless steel case, blue sunray dial, Swiss Automatic Chronograph Movement, 62 hr power reserve, Super-LumiNova hands and markers, a 7-link stainless steel bracelet, and is water resistant to 200 meters. 42mm case, 20mm band width, sapphire crystal, Automatic movement with chronograph analog display, Switzerland. Round stainless steel case, with a blue dial. Silver, stainless steel bracelet. Water resistant up to 200m - in general, suitable for professional marine activity and serious surface water sports, but not diving.