Omega Speedmaster Professional Moonwatch 311.30.42.30.01.005

【Technical Specifications】
Model: Speedmaster Professional Moonwatch 311.30.42.30.01.005
Brand: Omega

Movement: Manual-winding Caliber 1861 (NASA-certified)
Case: Stainless Steel (42mm) with Hesalite acrylic crystal
Bracelet: Five-link Stainless Steel “Flatlink”
Dial: Matte Black with Stepped Subdials/Tachymeter Bezel

【Lunar Engineering】
The legendary Caliber 1861 movement powers this timepiece, maintaining the 1965 prototype’s symmetrical dial architecture. The stepped case construction features an anodized aluminum tachymeter bezel with permanent fade resistance. Domed Hesalite crystal demonstrates extreme thermal stability (-40°C to +50°C), while the diamond-cut chronograph hand ensures precision tracking. The tri-compax layout with luminous stepped subdials embodies authentic space mission instrumentation aesthetics.