Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Yellow Gold Case - Silvery Dial - 131.50.39.20.02.002 Steel crystal white silvery dial and

crystal white silvery dial and scratch-resistant saphire crystal

including the iconic Calibre 5 and Calibre 16

0 mm stainless steel case

screw-in crown

Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Yellow Gold Case - Silvery Dial - 131.50.39.20.02.002 Steel crystal white silvery dial and39 mm 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 8801 self winding co axial master chronometer movement with date, approximately 55 hours of power reserve, yellow gold bracelet. Water resistant to 50 metres (167 feet).