Omega Seamaster Planet Ocean 600M Omega Co-Axial Master Chronometer Chronograph - 45.5 mm Steel Case - Ceramised Titanium Dial - 215.30.46.51.99.001 IW458109 grey dial with a date

grey dial with a date window at 3 o’clock

18K yellow gold screw-down crown with twinlock double waterproofness system

black dial with 18K Sedna gold Arabic numerals and hands

retrograde moon-phase hand in the form of a lunar crescent in blued steel

bezel edge and endpieces set with diamonds

Omega Seamaster Planet Ocean 600M Omega Co-Axial Master Chronometer Chronograph - 45.5 mm Steel Case - Ceramised Titanium Dial - 215.30.46.51.99.001 IW458109 grey dial with a date45. 5 mm steel case with anti magnetic protection and helium escape valve, transparent back, unidirectional bezel with diving scale filled with liquid ceramic and Super LumiNova, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, ceramised titanium dial with a small seconds counter and a date window, Calibre Omega 9900 self winding co axial master chronometer movement with chronograph, small seconds, and date,