Omega Speedmaster Racing Co-Axial Master Chronograph Watch - 44.25 mm Steel Case - Black Ceramic Bezel - Sun Brushed Grey Dial - 329.30.44.51.06.001 300 screw-down crown and push buttons

screw-down crown and push buttons with Triplock triple waterproofness

champagne Jubilee dial

manual-winding Omega 1861 movement with chronograph and small seconds (original movement that was worn on the moon)

18K yellow gold fluted crown with a synthetic spinel cabochon

Omega Speedmaster Racing Co-Axial Master Chronograph Watch - 44.25 mm Steel Case - Black Ceramic Bezel - Sun Brushed Grey Dial - 329.30.44.51.06.001 300 screw-down crown and push buttons44. 25 mm stainless steel case with antimagnetic design, transparent back, black ceramic bezel with tachymeter scale in orange wording and liquidmetal scale, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, sun brushed grey dial with racing style minute track, caliber 9900 self winding Co Axial master chronometer movement with chronograph and date functions, approximately 60 hours of power reserve, stainless steel