Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Bracelet

Reference 310.30.42.50.01.001

Omega Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Bracelet

About this watch

The Omega Speedmaster Professional Moonwatch 3861 is a masterpiece that combines timeless elegance with modern technology. Founded in 1848, Omega has been a pillar in the world of horology, synonymous with precision and innovation. From its stunning design to its robust functionality, it encapsulates the spirit of adventure and precision that Omega is known for. The Speedmaster line has always been a favorite, and the 3861 model is no exception. With a diameter of 42 mm, the stainless steel case provides both durability and a polished aesthetic. The tachymeter bezel allows for speed calculations over a known distance, making it not just a pretty face but a functional tool. At the heart of the Speedmaster Professional Moonwatch is the Omega Caliber 3861, a hand-wound movement that's a modern upgrade from previous models, incorporating a co-axial escapement and a silicon balance spring. The craftsmanship is evident in the intricate details of the movement, which you can admire through the closed case back.

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MSRP: $7,000

Market Price: $5,141

Key Features

Stainless steel case with black matte finish
42 mm diameter for a refined yet statement-making size
Plexi glass for added durability and shock resistance
Master Chronometer certification by METAS for accuracy and reliability
Hand-wound Omega Caliber 3861 movement with co-axial escapement and silicon balance spring
Chronograph function with small seconds, hours, and minutes
Water resistance of 50 meters for everyday wear

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Bracelet

Reference

310.30.42.50.01.001

Movement

3861

Movement Features

Small Seconds, Hours, Minutes
Chronograph
Chronometer

Case

Stainless Steel 42mm

Dial Color

Black

Crystal

Plexi

Water Resistance

Current Listings

Omega Speedmaster Grey Side of The Moon 311.93.44.51.99.002 Mint 2025

Omega - 311.93.44.51.99.002 · $7,995

This Omega Speedmaster Grey Side of The Moon is for sale in a very mint condition with no flaws and comes as a fully complete set.

Condition: Mint condition
Warranty Card Date: April 2025
Shipping Method: WW insured shipping

Posted at

Apr 21, 2026, 12:44 PM

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Omega Speedmaster '57 - current gen - warranty till Apr 2027 (price reduced)

Omega - 332.10.41.51.01.001 · $5,799

Up for sale is my April 29, 2022 dated Omega Speedmaster '57, current generation, with warranty till Apr 2027.

Condition: Pre-owned, very good condition with minor scratches and marks
Dimensions: 40mm diameter
Bracelet length: 17cm

Posted at

Apr 21, 2026, 9:31 AM

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Omega Speedmaster Professional Moonwatch ST 145.022-69 (1972)

Omega - ST 145.022-69 · $5,000

A 1972 Omega Speedmaster Professional Moonwatch with a manual wind Cal. 861 movement, 42mm stainless steel case, and black dial with three registers.

Condition: some scratches on the bezel and crystal, some marks on the case
Movement: Cal. 861
Case size: 42mm diameter
Water resistance: 30m depth rating

Posted at

Apr 21, 2026, 12:22 AM

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🐼NEW 2026 OMEGA SPEEDMASTER REVERSE PANDA

Omega - Speedmaster

No description provided.

Condition: new
Year: 2026

Posted at

Apr 20, 2026, 11:39 PM

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Omega Speedmaster Pro “Moon to Mars” Edition

Omega - 3577.50 · $6,500

The Omega Speedmaster Pro 'Moon to Mars' Edition features a beautiful dial with subdials painted as Earth, Moon and Mars.

Condition: Good, with a scratch on the crystal at 1 o'clock
Bracelet size: 7 inches
Movement: 1861 manual
Size: 42mm diameter

Posted at

Apr 20, 2026, 10:37 PM

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Omega Speedmaster Moonwatch Professional 42mm 310.30.42.50.01.002 | 2025 Complete Set

Omega - 310.30.42.50.01.002 · $6,950

The Omega Speedmaster Moonwatch Professional is a 42mm watch with an unknown service history.

Condition: Great Pre-Owned
Links: 24 Links
Warranty Years Remaining: 1 year (2025)

Posted at

Apr 20, 2026, 9:59 PM

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Omega Speedmaster. Mother of pearl dial. 39mm. Automatic.

Omega · $2,100

A 39mm automatic Omega Speedmaster with a mother of pearl dial and OEM omega strap.

Case size: 39mm
Movement type: Automatic

Posted at

Apr 20, 2026, 7:37 PM

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Omega Speedmaster Hesalite (ref. 3103042500100)

Omega - 3103042500100 · $5,350

A recently serviced Omega Speedmaster Professional Moonwatch with a newer 3861 movement, featuring Hesalite crystal. The watch comes with full set, including warranty card, pictograms, master chronometer certification, and extra links.

Condition: Very good, some small marks on the case and desk diving marks on the clasp
Movement: 3861, newer
Set included: full set, warranty card dated January 2021, pictograms, master chronometer certification, extra links

Posted at

Apr 20, 2026, 7:12 PM

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[US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW

Omega - 310.30.42.50.01.004 · $10,850

This Omega Speedmaster Moonwatch Professional is a 42mm Reverse Panda model available as a full set, complete with all original accessories.

Condition: Brand new, unworn, and in pristine condition
Case Size: 42mm
Set Contents: Watch,Box (inner & outer),Travel case,Historical booklet,User manual,Microfiber cloth,Master chronometer card,Warranty card

Posted at

Apr 20, 2026, 6:44 PM

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