Omega Speedmaster '57 Omega Co-Axial Chronograph Watch - 41.5 mm Red Gold Case - Brushed Bezel - Silver Dial - 331.50.42.51.02.002 44.25 4mm stainless steel case

4mm stainless steel case

Calibre Omega 9900 self-winding co-axial master chronometer movement with chronograph

white mother-of-pearl dial with stars

smoked blue dial with Grande Tapisserie pattern

Omega Speedmaster '57 Omega Co-Axial Chronograph Watch - 41.5 mm Red Gold Case - Brushed Bezel - Silver Dial - 331.50.42.51.02.002 44.25 4mm stainless steel case41. 5 mm 18K red gold case, transparent back, brushed bezel with with tachymeter scale, scratch resistant sapphire crystal with anti reflective treatment on both sides, silver dial, self winding chronometer Omega 9301 movement with Co Axial Escapement, chronograph, date, and small seconds, approximately 60 hours of power reserve, 18K red gold bracelet. Water resistant to 100 m.