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

2026 Omega Speedmaster Professional White Dial 310.32.42.50.04.002 Full Set $7,300

Omega - 310.32.42.50.04.002 · $7,300

A modern Omega Speedmaster Professional White Dial featuring a lacquered white dial, powered by the Omega Co-Axial Master Chronometer Calibre 3861, with a clean and high-contrast look.

Condition: Like new
Case size: 42mm diameter
Case material: Stainless steel
Movement: Manual wind (Omega Calibre 3861 Master Chronometer)

Posted at

May 2, 2026, 9:21 AM

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OMEGA Speedmaster Professional Moonwatch Sapphire 310.30.42.50.01.002 — Full Set — Micro-Adjust Clasp

Omega - 310.30.42.50.01.002 · $6,999

This Omega Speedmaster Professional Moonwatch features a black dial, sapphire crystal, and exhibition caseback showcasing the Omega Caliber 3861 Master Chronometer movement.

Condition: Excellent pre-owned condition
Case Size: 42mm diameter
Dial Color: Black
Crystal Type: Sapphire (Front & Exhibition Caseback)

Posted at

May 2, 2026, 4:31 AM

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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 commemorates the 50th anniversary of the Apollo 8 mission, featuring a black ceramic case and a skeletonized dial representing the lunar surface.

Condition: UNWORN
Case material: black ceramic
Diameter: 44.25mm
Movement: Calibre 1869

Posted at

May 1, 2026, 8:11 PM

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View listing on r/WatchExchange