This model is designed in a 30 mm case
Calibre Omega 2637 self winding co-axial tourbillon chronometer movement
8 mm 18K yellow gold case
manual-winding Omega 1861 movement with chronograph and small seconds (original movement that was worn on the moon)
this model features an opaline and blue dial with a steel bracelet
Omega Seamaster Diver 300M Co-Axial Master Chronometer Watch - 42 mm Steel Case - Blue Ceramic Dial - 210.30.42.20.03.001 Cream This model is designed in42 mm steel case with helium escape valve, transparent back, bezel with a white enamel diving scale, domed scratch resistant sapphire crystal anti reflective treatment on both sides, polished blue ceramic dial with laser engraved waves and a date window at 6 oclock, Caliber Omega 8800 self winding movement with co axial escapement, chronometer, date, approximately 55 hours of power reserve, steel bracelet. Water resistant to 30 bar (300 metres 1000