Omega Speedmaster Moonwatch Professional Co-Axial Master Chronometer Chronograph — Ref. 310.30.42.50.01.004
Video footage available upon request. Open to offers. Bracelet sizing service available.
About This Reference
The 310.30.42.50.01.004 debuted in 2026 as the newest addition to the Moonwatch Professional lineup, introducing an inverted dial configuration that sets it apart from every Speedmaster before it. The double-plate step dial presents a black varnished and lacquered upper surface with white varnished subdials framed by rhodium-plated rings — a reverse-contrast layout that gives the iconic Moonwatch silhouette a fresh visual identity while retaining the fourth-generation Speedmaster design DNA worn on the moon. Sapphire crystal on both the front and caseback distinguishes this from the hesalite references, with anti-reflective treatment on the inner surface for clarity and a view straight through to the hand-wound calibre 3861. Applied rhodium-plated hour markers, the Omega logo, and Moonwatch-style hands filled with white Super-LumiNova maintain the legibility standard the Speedmaster was selected for in 1965. The black ceramic bezel with white enamel tachymeter scale — including the signature dot over 90 — completes the package.
Specifications
Model: Omega Speedmaster Moonwatch Professional Co-Axial Master Chronometer Chronograph
Reference: 310.30.42.50.01.004
Caliber: 3861 (Co-Axial Master Chronometer, METAS certified, 26 jewels, 21,600 vph / 3 Hz, silicon balance spring, cam-actuated chronograph with horizontal clutch)
Case: Stainless steel, asymmetrical, 42mm × 13.54mm (47.5mm lug-to-lug)
Bezel: Black ceramic [ZrO2] with white enamel tachymeter scale, dot over 90
Crystal: Sapphire with anti-reflective treatment on inner surface (front and caseback)
Caseback: Sapphire crystal display
Dial: Black varnished and lacquered double-plate step dial with white varnished subdials, rhodium-plated frames, applied rhodium-plated hour markers and Omega logo, Moonwatch-style hands with white Super-LumiNova
Subdials: Small seconds, 30-minute chronograph counter, 12-hour chronograph counter
Bracelet: Polished-brushed stainless steel, five-arched-link style, foldover clasp with comfort adjustment system
Movement: Manual winding
Power Reserve: Approximately 50 hours
Water Resistance: 50m / 5 bar
Functions: Hours, minutes, small seconds, chronograph (central seconds, 30-minute counter, 12-hour counter)
Condition Report
Overall condition is excellent. The watch is unpolished.
- Case: 10/10 — no visible marks
- Bezel: 10/10 — no visible marks
- Crystal: 10/10 — no visible marks
- Dial/Hands: 10/10 — no visible marks
- Bracelet: 10/10 — no visible marks
- Clasp: 10/10 — no visible marks
- Caseback: 10/10 — no visible marks
Photos taken on full bracelet links, fitting approximately a 20cm (8 inch) wrist.
Delivery Contents
- Watch on stainless steel bracelet (full links, complete set)
- Original inner and outer boxes
- Warranty card (dated 2026)
- All papers and booklets
- Please refer to photos for full contents
Service & Authenticity
The watch has been run on a timegrapher and is running strong within specification. No prior service history. Omega 5-year factory warranty active through 2031.
Shipping & Legal
- Ships from: Huntsville, AL
- Shipping: Fully insured overnight with tracking provided
- Shipping within CONUS only
- Buyers are responsible for any applicable taxes and duties
- Watch is sold in accordance with United States laws and regulations
Questions?
All watches are inspected by our watchmakers for condition, authenticity, and functionality before sale. Feel free to reach out via messenger with any questions.