Omega steel and yellow gold ladies Constellation 1392.30.00. Automatic movement Caliber: Omega 2520. Case diameter 27.5mm. White dial with index hour markers. Yellow gold bezel with Roman numeral markers. Water resistant to 30m (100 feet). Power reserve 42 hours. Steel and gold bracelet with folding clasp. Box and papers dated November 2007. Omega service March 2018. Our reference S22360.