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

Reference 310.30.42.50.01.001

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
50

Current Listings

[WTS] Omega Speedmaster Moonphase c.2005 (Ref. 3576.50.00) - Box and Papers, 1-Year Warranty

Omega Speedmaster Moonphase c.2005 (Ref. 3576.50.00) - Box and Papers, 1-Year Warranty

Omega - 3576.50.00 · $6,700
The Omega Speedmaster Moonphase c.2005 combines the classic Speedy design with a moonphase and date complication, as well as a sapphire exhibition case back.

  • Condition: like new
  • Year: 2005
  • Box and papers included: true
  • Warranty included: 1-Year Mechanical Warranty
Posted at
Jul 30, 2025, 12:22 PM
Active
[WTS] Omega Speedmaster Moonwatch

Omega Speedmaster Moonwatch

Additional Details: Omega Speedmaster Moonwatch, iconic modern design with a 42mm case.

  • Condition: Mint condition
  • Case size: 42mm diameter
  • Set included: Full set - inner and outer box, cards, manual, all links
Posted at
Jul 30, 2025, 10:58 AM
Active
[WTS] Omega Speedmaster Apollo 17 45th Anniversary (Full Set, 2-yr warranty) Ref: 311.30.42.30.03.001

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

A rare and exquisite Omega Speedmaster Apollo XVII, a limited edition timepiece that commemorates the 45th anniversary of the final moon landing in 1972.

  • Condition: Very good condition with slight imperfections on the dial
  • Case size: 42mm
  • Water resistance depth: 50 meters / 167 feet
  • Movement type: Manual-Winding Chronograph Movement
Posted at
Jul 29, 2025, 7:43 AM
Active
[WTS] Omega Speedmaster Reduced Two Tone

Omega Speedmaster Reduced Two Tone

Omega - 3714.20.80 · $2,500
A rare Omega Speedmaster Reduced Two Tone with a white dial and gold subdials, kept in overall good condition for its age.

  • Condition: good, some wear on the case and bezel
  • Movement: Cal 1140
  • Case size: 39mm diameter
  • Dial color: white
Posted at
Jul 28, 2025, 9:44 PM
Active
[WTS] Omega Speedmaster Automatic 3510.50 Speedy Reduced

Omega Speedmaster Automatic 3510.50 Speedy Reduced

Omega - 3510.50 · $4,500
  • Movement: Calibre 3330, automatic
  • Water Resistance: 30m
Posted at
Jul 28, 2025, 3:30 PM
Active
[WTS] Omega Speedmaster Moonwatch black fabric Two‑piece Strap 032CWZ014117 with stainless steel clasp

Omega Speedmaster Moonwatch black fabric Two‑piece Strap 032CWZ014117 with stainless steel clasp

Omega - 032CWZ014117 · $525
A black fabric Two-piece Strap Omega Speedmaster Moonwatch with a stainless steel clasp, purchased only a few months ago and worn once.

  • Condition: Like new, only worn once
  • Authenticity: 100% authentic
  • Purchase date: July 12 this year
  • Seller location: New Jersey
Posted at
Jul 28, 2025, 2:14 PM
Active
[WTS] Omega Speedmaster Professional ‘Tintin’ – FULL SET

Omega Speedmaster Professional ‘Tintin’ – FULL SET

Omega - 311.30.42.30.01.004 · $10,295
This Omega Speedmaster Professional Moonwatch is a legendary chronograph with a distinctive red-and-white checkered outer track, inspired by Tintin's rocket from the classic comic *Objectif Lune*. It's powered by the reliable Caliber 1861 movement and features a 42mm stainless steel case with a black dial.

  • Condition: excellent
  • Case size: 42mm diameter
  • Movement type: manual-winding
Posted at
Jul 28, 2025, 1:49 PM
Active