Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel / Black Lacquer

Reference 310.30.42.50.01.004

Omega Speedmaster Professional Moonwatch 3861 Stainless Steel / Black Lacquer

About this watch

The Speedmaster Moonwatch Professional 310.30.42.50.01.004 debuted in 2026 as a sapphire-crystal variant of the modern Moonwatch, retaining the core design characteristics associated with the fourth-generation Speedmaster worn during the Apollo missions. The stainless steel case measures 42 mm in diameter, with a lug-to-lug length of 47.5 mm and a thickness of 13.54 mm. Sapphire crystal is fitted to both the front and the caseback, with anti-reflective treatment applied to the inner surface of the front crystal. Water resistance is rated to 50 metres. The watch is delivered on a polished-brushed stainless steel bracelet constructed in the contemporary Moonwatch five-arched-link style and fitted with a foldover clasp incorporating OMEGA’s comfort adjustment system. The dial adopts an inverted black-and-white configuration constructed using a double-plate step dial. The upper dial plate is finished in black with a varnished and lacquered surface, while the recessed subdials are executed in white with the same varnished finish. The subdials are framed by rhodium-plated rings and display small seconds, a 30-minute chronograph counter, and a 12-hour chronograph counter. The minute track is transferred in white on the main dial, with black transfers used on the subdials. Applied hour markers and the OMEGA logo are rhodium-plated, as are the Moonwatch-style hands, all filled with white Super-LumiNova. Surrounding the dial is a black ceramic bezel ring fitted with a tachymeter scale rendered in white enamel, including the characteristic dot-over-90 marking. Powering the watch is the manually wound OMEGA Co-Axial Master Chronometer calibre 3861. The movement operates at 3 Hz, provides a power reserve of approximately 50 hours, and is certified by METAS for precision, magnetic resistance up to 15,000 gauss, and overall performance. The movement is visible through the sapphire crystal caseback.
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Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Stainless Steel / Black Lacquer
Reference
310.30.42.50.01.004
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
Stainless Steel 42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS][US] Omega Speedmaster Moonphase - Black Dial - 44mm - 304.30.44.52.01.001

[US] Omega Speedmaster Moonphase - Black Dial - 44mm - 304.30.44.52.01.001

Omega - 304.30.44.52.01.001 · $6,725
Up for sale is an Omega Speedmaster Moonphase - Black Dial - 44mm watch that functions perfectly mechanically.

  • Condition: Fantastic condition with minor hairlines on bracelet, clasp, and case
  • Case size: 44mm diameter
Posted at
May 7, 2026, 6:52 AM
Active
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[WTS] Omega Speedmaster 3861 Bracelet 020STZ013434

Omega Speedmaster 3861 Bracelet 020STZ013434

Omega - 3861 Bracelet, 020STZ013434 · $600
Up for sale is an authentic Omega Speedmaster 3861 Bracelet, which fits the 42mm modern and 1861 speedy's.

  • Condition: like new, barely worn
  • Lug width: 20mm
  • Clasp width: 15mm
Posted at
May 6, 2026, 11:40 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Moon to Mars Special Edition

Omega Speedmaster Moon to Mars Special Edition

Omega - 3577.50 · $6,500
The Omega Speedmaster Pro 'Moon to Mars' features a beautiful dial with subdials painted as Earth, Moon and Mars.

  • Condition: good, with a scratch on the crystal at 1 o'clock
  • Movement: 1861 Manual
  • Size: 42mm diameter
  • Bracelet size: fits about 7 inches
Posted at
May 6, 2026, 9:13 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Professional White 42MM - Ref 310.32.42.50.04.002 (NEW 2026 COMPLETE SET)

Omega Speedmaster Professional White 42MM - Ref 310.32.42.50.04.002 (NEW 2026 COMPLETE SET)

Omega - 310.32.42.50.04.002 · $7,300
A brand new Omega Speedmaster Professional White, reference number 310.32.42.50.04.002, comes with a complete set including the outer sleeve, box, cards, manuals, and more.

  • Condition: New
  • Case size: 42mm
  • Warranty date: 04/16/2026
Posted at
May 6, 2026, 6:05 PM
Active
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[WTS] 2025 Omega Speedmaster Professional "Sapphire Sandwich" 310.30.42.50.01.002

2025 Omega Speedmaster Professional "Sapphire Sandwich" 310.30.42.50.01.002

Omega - 310.30.42.50.01.002 · $5,600
A lightly worn Omega Speedmaster Professional with a Calibre 3861 movement, sapphire crystals, and an aluminum tachymeter bezel.

  • Condition: lightly worn; excellent shape
  • Movement: Calibre 3861
  • Caseback: factory sealed, no modifications made
  • Bracelet: OEM steel bracelet, fully linked and comfortable to wear
Posted at
May 6, 2026, 2:46 PM
Active
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[WTS] Omega Speedmaster Moonwatch 3861 Sapphire 310.30.42.50.01.002 ( new / 2026 / box and papers )

Omega Speedmaster Moonwatch 3861 Sapphire 310.30.42.50.01.002 ( new / 2026 / box and papers )

Omega - 310.30.42.50.01.002 · $7,250
This is an Omega Speedmaster Moonwatch Professional Sapphire with a 42mm stainless steel case and 3861 Omega Master Chronometer Movement.

  • Condition: Brand new
  • Case size: 42mm diameter
  • Movement: 3861 Omega Master Chronometer Movement
Posted at
May 6, 2026, 12:55 PM
Active
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[WTS] Omega Speedmaster Moonwatch 3861 Hesalite 310.30.42.50.01.001 ( new / 2026 / box and papers )

Omega Speedmaster Moonwatch 3861 Hesalite 310.30.42.50.01.001 ( new / 2026 / box and papers )

Omega - 310.30.42.50.01.001 · $6,250
This Omega Speedmaster Moonwatch Professional is a brand new watch with all original packaging and papers, featuring a stainless steel case and 3861 Omega Master Chronometer Movement.

  • Condition: Brand new
  • Case size: 42mm diameter
  • Movement type: Master Chronometer
Posted at
May 6, 2026, 12:46 PM
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[WTS] Omega Speedmaster Milano Cortina 2026 (Full Set, Like New)

Omega Speedmaster Milano Cortina 2026 (Full Set, Like New)

Omega - 522.30.38.50.04.001 · $6,900
The Omega Speedmaster Milano Cortina 2026 features a varnished white dial with a frosted blue pattern, a stamped Olympic medallion caseback and is part of the full set with boxes, warranty card and other accessories.

  • Condition: Like New
  • Case size: 38mm diameter
  • Thickness: 14.75mm
  • Lug to lug length: 44.96mm
Posted at
May 5, 2026, 10:07 PM
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[WTS] - 1985 Omega Speedmaster Pro 3590.50 with Hang Tag - $5,800

- 1985 Omega Speedmaster Pro 3590.50 with Hang Tag - $5,800

Omega - 3590.50 · $5,800
This 1985 Omega Speedmaster Professional features a 42mm stainless steel case with a matte black tritium dial and black aluminum bezel insert. The watch has developed a beautiful patina over time, and the lume has aged to a cappuccino-like hue.

  • Condition: Excellent, unpolished condition with light wear for its age
  • Case size: 42mm
  • Bracelet length: Up to 19.5 cm / 7.67"
  • Crystal material: Hesalite
Posted at
May 5, 2026, 9:28 PM
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