Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Steel Case - Rhodium-Grey Dial - Grey Leather Strap - 131.13.39.20.06.001 heritage yellow dial domed scratch-resistant sapphire

yellow dial domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides

28 mm 18K yellow gold case

35 mm brushed 18K red gold case

Calibre 3120 selfwinding movement with hours

Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Steel Case - Rhodium-Grey Dial - Grey Leather Strap - 131.13.39.20.06.001 heritage yellow dial domed scratch-resistant sapphire39 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, silk embossed rhodium grey dial with date at 6 oclock, Calibre Omega 8800 self winding co axial master chronometer movement with date, approximately 55 hours of power reserve, grey leather strap. Water resistant to 50 metres (167 feet).