Omega Constellation Co-Axial Watch - 27 mm Steel Case - Mother-Of-Pearl Dial - 123.10.27.20.55.002 Calatrave Caliber: CRMA7

Caliber: CRMA7

Power reserve: 60 hours

steel folding buckle

18K pink gold fluted crown set with a blue cabochon sapphire

Omega Constellation Co-Axial Watch - 27 mm Steel Case - Mother-Of-Pearl Dial - 123.10.27.20.55.002 Calatrave Caliber: CRMA727 mm stainless steel case, transparent back, stainless steel bezel with engraved roman numerals, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, white mother of pearl dial with a wavy pattern extending from the iconic claws, 11 diamond indexes, date window at 3 o'clock, calibre 8520 self winding movement with co axial escapement for greater precision stability and durability, approximately 50 hours of power