Omega Constellation Omega Co-Axial - 38 mm Steel And Red Gold Case - Blue Dial - 123.20.38.21.03.001 1920 scratch-resistant sapphire crystal with cyclops

scratch-resistant sapphire crystal with cyclops lens over the date and double anti-reflective coating

unidirectional rotatable bezel with blue Cerachrom insert and platinum coated numerals and graduations

fluted crown with a synthetic cabochon-shaped spinel

grey ceramic pushpieces and screw-locked crown

Omega Constellation Omega Co-Axial - 38 mm Steel And Red Gold Case - Blue Dial - 123.20.38.21.03.001 1920 scratch-resistant sapphire crystal with cyclops38 mm steel and red gold case, transparent back, 18K red gold bezel, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, blue dial with an embossed lozenge pattern with date at 3 oclock, Calibre Omega 8500 self winding co axial chronometer movement with date, approximately 60 hours of power reserve, steel and red gold bracelet. Water resistant to 100 metres (330 feet).