Omega Ladies Constellation Chronometer Watch - 27 mm Brushed Steel Case - Black Supernova Diamond Dial - 123.10.27.20.51.001

27 mm brushed stainless steel case, transparent back, domed scratch-resistant sapphire crystal with anti-reflective treatment both sides, black 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 bracelet. Water resistant to 100 m.