Omega Style No: 123.20.27.20.55.002 Omega Ladies Constellation Chronometer Watch - 27 mm Brushed Steel And Yellow Gold Case - Mother-Of-Pearl Supernova Diamond Dial

27 mm brushed stainless steel and 18K yellow gold case, transparent back, domed scratch-resistant sapphire crystal with anti-reflective treatment both sides, white mother-of-pearl supernova dial with diamond hour markers, self-winding chronometer Omega 8520 movement with Co-Axial Escapement, date, and seconds, approximately 50 hours of power reserve, stainless steel and 18K yellow gold bracelet. Water resistant to 100 m.