Rip Curl Men's MID CIVILIAN AUTOMATIC MIDNIGHT - MID Analog Display Japanese Automatic Black Watch 24 Jewels: Automatic Movement (No Battery Required) 316L high grade stainless steel case that does not rust and is non-corosive when exposed to a marine environment Individually depth tested and water resistant up to 100 meters (330 feet) Durable mineral crystal that is scatch resistant and protects from all types of impact Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving