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] Omega Speedmaster 3210.50 Black Dial $2,090

Omega Speedmaster 3210.50 Black Dial $2,090

Omega - 3210.50 · $2,090
The Omega Speedmaster Date is a 40mm stainless steel automatic chronograph with a black dial and tachymeter bezel, featuring a sporty classic look and an automatic movement.

  • Condition: pre-owned, good condition with scuffs due to age
  • Case size: 40mm diameter
  • Lug-to-lug length: 45mm
  • Lug width: 19mm
Posted at
Apr 15, 2026, 9:42 AM
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[WTS] INCREDIBLE Vintage 18K Gold Omega Speedmaster Tribute to Astronauts Ref BA145.022 Unpolished Holy Grail Example!!!

INCREDIBLE Vintage 18K Gold Omega Speedmaster Tribute to Astronauts Ref BA145.022 Unpolished Holy Grail Example!!!

Omega - BA145.022-69 · $48,500
This is a vintage Omega Speedmaster Tribute to Astronauts ref BA145.022-69, one of the first solid gold Speedmasters produced in 1969.

  • Condition: Excellent, unpolished with patina
  • Case size: 42mm diameter
  • Bracelet length: 7.5 inches
  • Movement: Lemania-based hand wound caliber 861
Posted at
Apr 14, 2026, 9:59 PM
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[WTS] Omega Speedmaster '57 - current gen - warranty till Apr 2027

Omega Speedmaster '57 - current gen - warranty till Apr 2027

Omega - 332.10.41.51.01.001 · $6,099
A current generation Omega Speedmaster '57 with a April 29, 2022 date, featuring a scratch on the crystal near 12 o'clock.

  • Condition: Very good, hairlines and desk diving marks
  • Bracelet size: 17cm
  • Box included: yes
  • Warranty expiration date: Apr 2027
Posted at
Apr 14, 2026, 9:41 PM
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[WTS] Omega Speedmaster Triple Calendar w/ EBay authentication

Omega Speedmaster Triple Calendar w/ EBay authentication

Omega - Speedmaster Triple Calendar · $2,300
This Omega Speedmaster features an automatic chronograph, day, month, and year calendar with a clean and uncluttered dial. The watch is 42 mm in size but wears smaller on the wrist.

  • Condition: Good condition, some signs of use
  • Size: 42mm diameter, 40-41mm on the wrist
  • Authentication: eBay authenticated
Posted at
Apr 14, 2026, 9:02 PM
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[WTS] 2024 Omega Speedmaster 38mm Diamond Bezel Gray Dial Full Set Excellent Condition - 324.38.38.50.06.001

2024 Omega Speedmaster 38mm Diamond Bezel Gray Dial Full Set Excellent Condition - 324.38.38.50.06.001

Omega - 324.38.38.50.06.001
2024 Omega Speedmaster 38mm Diamond Bezel Gray Dial Full Set, in excellent condition.

  • Diameter: 38mm
Posted at
Apr 14, 2026, 7:04 PM
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[WTS] New 2026 Omega Speedmaster Professional Hesalite Full Set only $6400

New 2026 Omega Speedmaster Professional Hesalite Full Set only $6400

Omega - 310.30.42.50.01.001 · $6,400
This brand new Omega Speedmaster Professional is presented in pristine condition and comes complete with its original full set, including a factory warranty card dated 2026.

  • Condition: pristine, unworn
  • Warranty: 5-year international warranty
  • Price Comparison: list price from authorized dealer: $7800 plus tax
Posted at
Apr 14, 2026, 12:27 PM
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[WTS] Omega Speedmaster Reduced 3510.50 - $2,390

Omega Speedmaster Reduced 3510.50 - $2,390

Omega - 3510.50 · $2,390
Up for sale is my Omega Speedmaster Reduced 3510.50 in great condition. It features a steel case and original speedmaster bracelet.

  • Condition: great condition, minimal wear
  • Bracelet length: original
  • Box included: yes
  • Shipping: Fedex Priority Shipping from Philippines, 3-5 days globally
Posted at
Apr 14, 2026, 4:26 AM
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[WTS] Omega Speedmaster Reduced Automatic 3510.50 – Black Dial – $3,000

Omega Speedmaster Reduced Automatic 3510.50 – Black Dial – $3,000

Omega - Speedmaster Reduced Automatic 3510.50 · $3,000
a Omega Speedmaster Reduced Automatic with a black dial is for sale.

  • Dial color: Black
Posted at
Apr 14, 2026, 2:55 AM
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[WTS] Omega Speedmaster Triple Calendar Day-Date Ref.3221.30.00 40mm | Great Condition (With Box & Serviced) | $2400

Omega Speedmaster Triple Calendar Day-Date Ref.3221.30.00 40mm | Great Condition (With Box & Serviced) | $2400

Omega - 3221.30.00 · $2,400
The Omega Speedmaster Triple Calendar Day-Date Ref.3221.30.00 is a more feature-packed take on the classic Speedmaster, with a stainless steel case, sapphire crystal, and Caliber 3606 movement.

  • Condition: Great condition, serviced
  • Case size: 40mm diameter
  • Thickness: 15mm
  • Water resistance: 100m
Posted at
Apr 13, 2026, 11:07 PM
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