Omega Constellation Manhattan Co-Axial Master Chronometer Watch - 29 mm Steel And Sedna Gold Case - Crystal White Silvery Dial - 131.20.29.20.02.00129 mm stainless steel and 18K Sedna gold case, transparent back, bezel engraved with Roman numerals, domed scratch resistant sapphire crystal anti reflective treatment on both sides, crystal white silvery dial and a date window at the 6 o'clock position, Caliber Omega 8700 self winding movement with co axial escapement, chronometer, date, approximately 50 hours of power reserve, stainless steel and Sedna gold bracelet. Water resistant to 5 bar (50