Omega Constellation OMEGA Co-Axial Master Chronometer - 36 mm Steel And Yellow Gold Case - Silvery Dial - 131.20.36.20.02.002 black-bay 18K red gold bezel with

18K red gold bezel with diamond-set

notched bezel and automatic movement

yellow gold hands

polished steel case

engraved back

Omega Constellation OMEGA Co-Axial Master Chronometer - 36 mm Steel And Yellow Gold Case - Silvery Dial - 131.20.36.20.02.002 black-bay 18K red gold bezel with36 mm steel and yellow gold case with anti magnetic protection, transparent back, bezel engraved with Roman numerals, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, opaline white silvery dial with date at 6 oclock, Calibre Omega 8800 self winding co axial master chronometer movement with date, approximately 55 hours of power reserve, steel and yellow gold bracelet. Water resistant to 50 metres (167 feet).