Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Steel And Yellow Gold Case - Champagne Diamond Dial - Brown Leather Strap - 131.23.39.20.58.001

39 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, silk-embossed champagne dial with diamond indexes with date at 6 oclock, Calibre Omega 8800 self-winding co-axial master chronometer movement with date, approximately 55 hours of power reserve, brown leather strap. Water resistant to 50 metres (167 feet).