OMEGA Seamaster Planet Ocean 600M Co-Axial 43.5mm Mens Watch 215.30.44.21.04.001The OMEGA Seamaster Planet Ocean mens watch is a 43.5mm stainless steel model and features a while ceramic dial with applied Arabic numerals in orange and a date window positioned at 3 o'clock. The stand-out orange ceramic unidirectional bezel includes a diving scale filled with liquid ceramic and Super-LumiNova. Other features include an alveol screw-in case back and an integrated stainless steel bracelet with patented extendable fold over clasp and diver extension. Powering this timepiece is the Swiss made OMEGA Master Chronometer Calibre 8900 movement which is made visible through the sapphire crystal case back. To achieve the Master Chronometer status, this model has passed the 8 rigorous, precision tests set by METAS (The Swiss Federal Institute of Metrology). Water resistant to 600m.