Omega Planet Ocean 600 M Omega Co-axial Master Chronometer Watch - 43.5 mm Steel Case - Unidirectional Black Ceramic Bezel - Black Ceramic Dial - Black Structured Rubber Strap - 215.32.44.21.01.001 royal 28 mm 18K Sedna gold

28 mm 18K Sedna gold case

screw-down back

24 mm stainless steel case

transparent screw-in back

unidirectional rotating black ceramic bezel with orange rubber and Liquidmetal diving scale

Omega Planet Ocean 600 M Omega Co-axial Master Chronometer Watch - 43.5 mm Steel Case - Unidirectional Black Ceramic Bezel - Black Ceramic Dial - Black Structured Rubber Strap - 215.32.44.21.01.001 royal 28 mm 18K Sedna gold43. 5 mm stainless steel case with anti magnetic properties and helium escape valve, transparent back, screw in crown, unidirectional rotating black ceramic bezel with orange rubber and Liquidmetal diving scale, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, polished black ceramic dial with orange Arabic numerals, caliber 8900 self winding master co axial chronometer movement with date window at the 3 oclock,