Omega Constellation Co-Axial Master Chronometer Watch - 27 mm Steel And Red Gold Case - White -Silvery Diamond Dial - Brushed Steel Bracelet - 127.20.27.20.52.001 IW387903 convex sapphire crystal with antireflective

convex sapphire crystal with antireflective coating on both sides

the Black Bay 32 is a refined

annual calendar

11 diamond indexes

Omega Constellation Co-Axial Master Chronometer Watch - 27 mm Steel And Red Gold Case - White -Silvery Diamond Dial - Brushed Steel Bracelet - 127.20.27.20.52.001 IW387903 convex sapphire crystal with antireflective27 mm stainless steel and 18K red 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 red gold bars. Water resistant to 100 m (330 ft).