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

Current Listings

Omega Speedmaster Moonwatch 310.30.42.50.04.001 Box and Papers, 2024, $7500

Omega - 310.30.42.50.04.001 · $7,500

The Omega Speedmaster Moonwatch features a 42mm diameter, 50m water resistance, and 50 hour power reserve with chronograph functionality.

Condition: Dial and crystal are clean, Case and caseback are clean, Bracelet is excellent but clasp has hairline scratches
Water Resistance: 50m depth rating
Case Size: 42mm diameter
Power Reserve: 50 hours

Posted at

Apr 24, 2026, 11:24 PM

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Omega speedmaster reduced

Omega - 3510.50 · $2,500

Up for sale is my Omega Speedmaster Reduced from the mid 1990s, which comes in a stainless steel case with a black dial and automatic chronograph.

Condition: Great condition for its age, with patina
Case size: 39mm
Bracelet type: Stainless steel and Uncle's flat link bracelet
Bracelet material: Stainless steel

Posted at

Apr 24, 2026, 10:59 PM

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OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥

OMEGA - 311.92.44.30.01.001 · $10,000

The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 watch commemorates the 50th anniversary of the Apollo 8 mission, featuring a black ceramic case and a skeletonized dial with a lunar surface design.

Condition: UNWORN
Case material: black ceramic
Case diameter: 44.25mm

Posted at

Apr 24, 2026, 6:21 PM

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BNIB Omega Speedmaster Professional 310.30.42.50.01.001 $6,799

Omega - 310.30.42.50.01.001 · $6,799

The Omega Speedmaster Moonwatch Professional features a 42mm stainless steel case with a hesalite front and solid case back, powered by the updated caliber 3861 movement.

Condition: Brand new in box with warranty
Movement: Hand wound Cal 3861
Power reserve: 50 hours
Case size: 42mm diameter

Posted at

Apr 24, 2026, 5:59 PM

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