Omega Style No: 131.55.39.20.52.002 Omega Constellation Co-Axial Master Chronometer - 39 mm Yellow Gold Case - Diamond Bezel - Opaline Silvery Diamond Dial

39 mm yellow gold case, transparent back, diamond-paved bezel, domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides, opaline silvery dial with diamond hour-markers with date at 6 oclock, Calibre 8801 self-winding chronometer movement with date. Water resistant to 50 metres (167 feet).