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. Mother of pearl dial. 39mm. Sapphire Crystal. Automatic. Olympics Special Edition.

Omega - Speedmaster · $2,295

This Omega Speedmaster is a 39mm automatic watch featuring a mother of pearl dial and sapphire crystal. It's an Olympics Special Edition model.

Condition: Clean
Diameter: 39mm
Case material:
Movement: Automatic

Posted at

Oct 23, 2025, 7:27 PM

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Reduced Price! Omega Speedmaster “Triple Date” 3521.30.00 – Fully Overhauled by Omega Service Center (Jan 2025) – $2,175 OBO Shipped (CONUS)

Omega - 3521.30.00 · $2,175

For sale is my Omega Speedmaster Chronograph 'Triple Date' (Ref. 3521.30.00), a fully overhauled timepiece with excellent condition and functionality.

Condition: Excellent post-service condition — running perfectly
Case Material: stainless steel
Case Size: 39mm diameter
Lug Width: 18mm

Posted at

Oct 23, 2025, 2:49 PM

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Omega Speedmaster Apollo 17 45th Anniversary (2-yr warranty) Ref: 311.30.42.30.03.001

Omega - 311.30.42.30.03.001 · $7,600

This Omega Speedmaster Apollo XVII is a limited edition watch commemorating the 45th anniversary of the final moon landing in 1972, featuring a polished blue ceramic dial and stainless steel case.

Condition: Very good condition with slight imperfections on the dial
Case Diameter: 42mm
Water Resistance: 50m / 167ft
Movement Type: Manual-Winding Chronograph Movement

Posted at

Oct 23, 2025, 9:37 AM

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Omega Speedmaster Moonwatch Professional Moonshine Gold 42mm Complete Set 310.62.42.50.99.001

Omega - 310.62.42.50.99.001 · $23,895

This Omega Speedmaster Moonwatch Professional features a 18kt moonshine gold case with a gold and black dial, anti-magnetic co-axial escapement, and comes in its original box and papers.

Condition: Excellent condition with little to no signs of wear
Movement: Mechanical (Automatic)
Case Size: 42mm diameter
Water Resistance: 50m depth rating

Posted at

Oct 23, 2025, 8:43 AM

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Omega Speedmaster 311.93.44.51.99.001 Grey Side of the Moon 2018 Year

Omega - 311.93.44.51.99.001 · $8,000

This Omega Speedmaster Grey Side of the Moon is a 2018 model, featuring a pre-owned watch in excellent condition with minimal scratches.

Condition: Preowned, minor hairline scratches and possibly a clean crystal with marks under strong magnification
Year: 2018
Shipping method: FedEx, insured, 2-day shipping

Posted at

Oct 23, 2025, 1:25 AM

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Omega Speedmaster. Mother of pearl dial. 39mm. Sapphire Crystal. Auto. 🔥

Omega - Speedmaster · $2,650

A rare Omega Speedmaster with a mother of pearl dial and sapphire crystal, available for sale in excellent condition.

Diameter: 39mm
Movement: auto

Posted at

Oct 22, 2025, 8:45 PM

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🔥OMEGA SPEEDMASTER MOONWATCH PROFESSIONAL SAPPHIRE SANDWICH 310.30.42.50.01.002 COMPLETE 10/2025 WITH STICKERS!!!🔥

OMEGA - 310.30.42.50.01.002 · $7,199

A brand new, unworn OMEGA Speedmaster Moonwatch Professional Sapphire Sandwich with a black dial and stainless steel case.

Condition: Brand new/unworn
Case Size: 42mm diameter
Material: Stainless Steel

Posted at

Oct 22, 2025, 8:18 PM

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Omega Speedmaster Chronograph Broad Arrow Tokyo Olympic 2020

Omega - 321.10.42.50.04.001 · $2,850

The Omega Speedmaster Chronograph Broad Arrow Tokyo Olympic 2020 features a stainless steel case with a clean white dial, bold legible arabic numerals, and broad arrow hands. The chronograph hand reveals the Olympic rings, and the watch is powered by an automatic Co-Axial calibre 3313.

Condition: Minimal wear and light polish on bracelet and clasp
Case size: 42mm diameter x 48 height
Lug width: 20mm
Wrist size recommendation: 7.8in

Posted at

Oct 22, 2025, 8:07 PM

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