Edox Men's 80301 3NM BUIN Hydro Sub Analog Display Swiss Automatic Silver Watch Imported The Edox hydro-sub dive watch is one of the world's most iconic diver's watches, no exception. Just like the original released in 1965, the hydro-sub has set new standards for ultra-deep dive watches with its water resistance to 500M Besides the unique and proprietary masterlock crown protecting system, the Edox hydro-sub has a stainless steel case, a screw down crown, and a sapphire crystal Swiss-automatic Movement Case Diameter: 46mm Water Resistant To 1640 Feet