Paying tribute to Omega’s ocean heritage, the Seamaster Planet Ocean collection features Master Chronometer certification, advanced designs, and water resistance to 30 bar (300 metres). Designed for use underwater, the Pro Diver collection includes co-axial escapement for long-lasting precision, a silicon balance spring for superior anti-magnetism, and a newly designed helium escape valve. This 42mm timepiece is presented on a black rubber strap with a pin buckle securement and powered by the 8800 calibre movement. A Master Chronometer certified and approved by METAS, this wristwatch features a black ceramic bezel complete with a Ceragold™ diving scale mounted to a polished black dial with Sedna™ gold and white Super-LumiNova hands and indexes.