Rip Curl Men's A2221 - MIL DETROIT MIDNIGHT - MILITARY GREEN Analog Display Quartz Black Watch Quartz movement 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