Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Steel Case - Black Dial - Black Leather Strap - 131.13.39.20.01.001 Copper folding Oysterclasp buckle

folding Oysterclasp buckle

5 mm Sedna gold case

Crystal- Glass

39 mm stainless steel and 18K Sedna gold case

Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Steel Case - Black Dial - Black Leather Strap - 131.13.39.20.01.001 Copper folding Oysterclasp buckle39 mm steel case with anti magnetic protection, transparent back, bezel with blackened Roman numerals, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, sun brushed black dial with date at 6 oclock, Calibre Omega 8800 self winding co axial master chronometer movement with date, approximately 55 hours of power reserve, black leather strap. Water resistant to 50 metres (167 feet).