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.

Buy Now on Jomashop

This is an affiliate link

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 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

Active

View listing on r/WatchExchange

[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

Active

View listing on r/WatchExchange

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

Active

View listing on r/WatchExchange

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

Active

View listing on r/WatchExchange

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

Active

View listing on r/WatchExchange

Omega Speedmaster Moonphase | Ref. 304.33.44.52.03.001 | 2024 | Complete Set Mint | $7,399 Shipped

Omega - 304.33.44.52.03.001 · $7,399

The Omega Speedmaster Moonphase combines the classic Moonwatch design language with added complications and a stunning blue colorway, featuring a chronograph, moonphase display at 6 o'clock, pointer date subdial at 9 o'clock, powered by Co-Axial Master Chronometer movement.

Condition: Excellent overall
Case size: 44.25mm diameter
Movement: Co-Axial Master Chronometer movement
Complications: chronograph, moonphase display, pointer date subdial

Posted at

Jan 10, 2026, 8:06 PM

Active

View listing on r/WatchExchange

Excellent Omega Speedmaster Broad Arrow Co-Axial GMT Mens Watch $2750

Omega - Speedmaster Broad Arrow Co-Axial GMT · $2,750

This Omega Speedmaster Broad Arrow Co-Axial GMT is a high-quality watch featuring an automatic movement and stainless steel case. It measures 44mm in width, making it suitable for larger wrists.

Condition: Pre-owned
Case width: 44mm (without crown)
Band size: fits up to approx 20cm
Movement: automatic 3603

Posted at

Jan 10, 2026, 8:01 PM

Active

View listing on r/WatchExchange