It was with OMEGA’s maritime legacy in mind that the brand launched its Planet Ocean line in 2005. Today, the stylish OMEGA Seamaster Planet Ocean 600M Master Chronometer pays homage to OMEGA’s dive watch heritage. This model, with its scratch-resistant sapphire crystal, features a black ceramic dial with Arabic numerals and a date window at the 3 o’clock position. The black ceramic unidirectional bezel with OMEGA Liquidmetal™ diving scale is mounted on a 39. 5 mm stainless steel case. Other features include an alveol screw-in caseback and a black leather strap with rubber lining. The OMEGA Seamaster Planet Ocean 600M Master Chronometer is water resistant to 600 metres / 2000 feet / 60 bar, and has a helium-escape valve. The OMEGA Master Chronometer calibre 8800 at the heart of this timepiece can be seen through the transparent caseback. To achieve Master Chronometer status, it has passed the 8 rigorous tests set by METAS (The Swiss Federal Institute of Metrology).Calibre Omega 8800: Self-winding movement with Co-Axial escapement. Certified Master Chronometer, approved by METAS, resistant to magnetic fields reaching 15, 000 gauss. Free sprung-balance with silicon balance spring, automatic winding in both directions. Rhodium plated finish with Geneva waves in arabesque. FEATURESAnti-Magnetic: The movement is unaffected by exposure to strong magnetic fields, even those greater than 1. 5 tesla (15, 000 gauss).Automatic Watch: A self-winding watch or automatic watch uses a mechanical movement whose main spring is wound automatically by the natural motion of the wearer\'s arm. Chronometer: Label given to a watch which has undergone precision tests and received a certificate from an official body (COSC).Date: The day of the month, displayed in a window on a watch dial at the 3 or 6 o’clock position, or within a subdial at 9 o\'clock. Helium Escape Valve: Decompression system which allows helium to escape from inside the watch when the watch is worn for professional use in pressure ch