Omega Constellation Co-Axial Master Chronometer Watch - 27 mm Steel And Yellow Gold Case - White -Silvery Diamond Dial - Brushed Steel Bracelet - 127.20.27.20.52.002

27 mm stainless steel and 18K yellow gold case, transparent back, domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides, white opaline-silvery dial with silk-like pattern and diamond indexes, caliber 8700 self-winding Co-Axial master chronometer movement with date function, approximately 50 hours of power reserve, brushed stainless steel bracelet with polished 18K yellow gold bars. Water resistant to 100 m (330 ft).