Omega Speedmaster Moonwatch Professional 3861 Hesalite 310.30.42.50.01.001 2024 [Preowned]

Overview 

The Moonwatch 310.30.42.50.01.001 is the Hesalite Moonwatch powered by Calibre 3861 — Omega's Co-Axial, METAS-certified upgrade to the movement architecture the Speedmaster has carried since the 1960s. What changed was the escapement, the certification standard, and the magnetic resistance. What didn't change is what the Hesalite configuration is specifically about: acrylic crystal, solid caseback, the same external specification as the watch NASA qualified for space use in 1965.

The case is 42mm stainless steel with the asymmetric crown-at-2 construction, on the stainless steel bracelet. The tachymeter bezel is black anodized aluminum — not ceramic, which is the correct heritage material for this reference and the detail that distinguishes the Hesalite lineup from the sapphire variants in the current range. The black dial carries three sub-registers at 3, 6, and 9 o'clock with applied baton indices; no date. The Hesalite crystal scratches more readily than sapphire but doesn't shatter — the functional reason NASA specified it — and it renders the dial with a subtly warmer tone the sapphire variant doesn't replicate.

The Calibre 3861 replaces the Lemania-derived 1861 with Omega's Co-Axial escapement — a different friction geometry that reduces lubricant degradation at the escapement contact point and extends service intervals. METAS Master Chronometer certification adds independently verified accuracy between 0 and +5 seconds per day on the wrist, alongside 15,000-gauss magnetic resistance. The movement is hand-wound with a 50-hour power reserve; the caseback is solid, the same closed configuration as the original flight watches.

The primary choice in the current Moonwatch lineup is between this Hesalite configuration and the sapphire crystal variant — a decision that determines caseback presentation as much as crystal type. The Hesalite carries its secondary market value on collector preference for the original specification; the sapphire variant commands a moderate retail premium that compresses in the secondary market, where demand for the historically accurate configuration is consistent. We are currently seeing the 3861 Hesalite hold a solid floor at secondary — uncertainty around the calibre transition has fully cleared, and pricing now reflects what the watch is rather than the change it represented. Preowned, excellent condition, complete with box and papers dated July 2024, at RM23,500 against an RRP of RM34,150.

Specifications

Brand :	Omega
Model Name :	Speedmaster Moonwatch Professional Co-Axial
Reference :	310.30.42.50.01.001
Material	Steel
Movement :	Calibre 3861 50hours PR
Case Diameter :	42mm
Bracelet / Strap :	Steel bracelet
Features :	50m depth rating.

Condition

Preowned, Excellent Condition, Complete Original Set with Box and Papers dated July 2024.

Warranty

5 years original manufacturer warranty. 

 

Further Insight from Our Specialist Team

Read our Full Review here : Omega Speedmasters: 3861 White Dial vs. Caliber 321 Ed White - The Battle of Modernity and Heritage

Watch our Video Review Here :