Omega Constellation Omega Co-Axial Master Chronometer - 29 mm Steel Case - Diamond Bezel - Blue Glass Diamond Dial - 131.15.29.20.53.001 IW387903 Contained within a 28mm case

Contained within a 28mm case and protected by scratch-resistant sapphire glass

calibre 8520 self-winding movement with co-axial escapement for greater precision stability and durability

silvered dial with vintage OMEGA logo and blued hands

27 mm brushed stainless steel and 18K yellow gold case

perpetual calendar

Omega Constellation Omega Co-Axial Master Chronometer - 29 mm Steel Case - Diamond Bezel - Blue Glass Diamond Dial - 131.15.29.20.53.001 IW387903 Contained within a 28mm case29 mm steel case with anti magnetic protection, transparent back, diamond paved bezel, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, blue aventurine glass dial with diamond hour markers with date at 6 oclock, Calibre Omega 8700 self winding co axial master chronometer movement with date, approximately 50 hours of power reserve, steel bracelet. Water resistant to 50 metres (167 feet).