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

20mm Omega Speedmaster Bracelet 1499 / 842 – Production (1996–1998)

Omega - 1499 / 842 · $495

A high-quality Omega factory bracelet option with excellent build and taper, known among Speedmaster collectors.

Production Period: 1996-1998
Wrist Size Fit: 7 3/4 inches

Posted at

Jan 12, 2026, 1:09 PM

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PRICE DROP: Omega Speedmaster White Dial Full Set

Omega - 310.30.42.50.04.001 · $7,400

A Omega Speedmaster White Dial full set, including a flat link bracelet honoring the original Speedmaster from 1957.

Bracelet style: flat link, honoring original 1957 Speedmaster
Clasp condition: some snail trails

Posted at

Jan 12, 2026, 12:18 PM

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Omega Speedmaster Moonphase 304.33.44.52.03 Blue Dial 44.25mm Full Set

Omega - 304.33.44.52.03

This listing is for an Omega Speedmaster Moonphase with a blue dial and 44.25mm case size.

Diameter: 44.25mm

Posted at

Jan 12, 2026, 10:17 AM

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[US] Omega Speedmaster Broad Arrow - White Dial - 42mm - 3551.20.00 - Full Set

Omega - 3551.20.00 · $4,125

An Omega Speedmaster Broad Arrow with a white dial and 42mm case, available in full set with box and papers.

Condition: Fantastic condition with minor hairlines on bracelet, case, and clasp
Case Size: 42mm diameter
Year: 2006

Posted at

Jan 12, 2026, 8:06 AM

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Omega Speedmaster Pilot | 2025

Omega - 332.10.41.51.01.002 · $7,500

This Omega Speedmaster Pilot is the recently released flight qualified version of the Speedmaster, featuring an automatic caliber 9900 movement and sapphire crystal.

Condition: Excellent
Case size: 40.85mm
Case material: Steel
Bracelet material: Steel

Posted at

Jan 11, 2026, 8:01 PM

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2023 Omega Speedmaster Moonphase Sedna (Rose) Gold / Brown Dial

Omega - 304.23.44.52.13.001 · $9,848

This Omega Speedmaster Moonphase features a sophisticated evolution of the legendary Speedmaster with classical complications and modern Omega innovation, crafted in 18k Sedna Gold with a beautifully finished brown sun-brushed dial.

Condition: excellent
Case Size: 44.25mm diameter
Case Material: 18k Sedna Gold
Dial: brown sun-brushed

Posted at

Jan 11, 2026, 4:57 PM

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20mm Two Omega OEM Integrated Speedmaster Black Rubber Straps & One - Omega OEM Clasp - (Backordered by Omega)

Omega - 032Z017245 · $350

This Omega watch has two OEM integrated black rubber straps and one stainless steel deployant clasp. It's designed to fit the Speedmaster Professional with a 20mm lug size.

Condition: Excellent
Material: Black Rubber
End Type: curved ends
Lug Size: 20mm/16mm

Posted at

Jan 11, 2026, 8:52 AM

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2022 Omega Speedmaster Moonwatch Sapphire 42mm 310.30.42.50.01.002 Mint Complete

Omega - 310.30.42.50.01.002 · $6,195

This 2022 Omega Speedmaster Moonwatch Sapphire 42mm is a first watch worn on the moon, featuring photos and a video on the seller's website.

Condition: Minty fresh
Case size: 42mm
Year: 2022
Contents: watch,inner & outer boxes,warranty card,pictogram,master chronometer,instruction booklet,black travel case,hang tag,cleaning cloth,Moonwatch Booklet

Posted at

Apr 7, 2025, 2:59 PM

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Omega Speedmaster Chronograph - Blue - Stainless Steel - 38mm - Mint

Omega - 324.30.38.50.03.002 · $3,695

This Omega Speedmaster Chronograph features a 38mm stainless steel case, blue dial, and automatic movement.

Condition: Pre-Owned - Mint
Case size: 38mm diameter
Bracelet type: Stainless Steel
Dial color: Blue

Posted at

Apr 5, 2025, 6:13 PM

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