Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel - Moonshine Gold / Silver

Reference 310.20.42.50.02.001

About this watch

The Omega Speedmaster Professional Moonwatch 310.20.42.50.02.001 is a stunning blend of classic design and cutting-edge technology, featuring a stainless steel case, Moonshine gold accents, and sophisticated chronograph functionality. At the heart of this timepiece is the Omega caliber 3861 movement, certified as a Master Chronometer by METAS and boasting advanced features like a co-axial escapement, silicon balance spring, and magnetic resistance of up to 15,000 gauss. The Speedmaster's ergonomic design ensures it sits comfortably on the wrist, while its 50-meter water resistance makes it practical for daily wear. This watch is incredibly versatile, adapting effortlessly from formal events to casual days out, and its durability is ensured by top-notch materials like ceramic, stainless steel, and Moonshine gold. With a price point that reflects its quality and heritage, the Omega Speedmaster Professional Moonwatch 3861 is an investment in horological history.
Buy Now on Jomashop
This is an affiliate link

Key Features

  • Omega caliber 3861 movement with co-axial escapement and silicon balance spring
  • 50-meter water resistance for everyday wear
  • Chronograph functionality with precise timing and intuitive layout
  • Moonshine gold accents and stainless steel case for luxurious appearance
  • Sapphire glass for scratch-resistance and durability
  • Master Chronometer certification by METAS for high accuracy and reliability

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Stainless Steel - Moonshine Gold / Silver
Reference
310.20.42.50.02.001
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
42mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster FOIS 40mm Numbered Edition – Excellent Condition, New Lincoln Bracelet, Professional Ed White Mod, Box + Warranty Card

Omega Speedmaster FOIS 40mm Numbered Edition – Excellent Condition, New Lincoln Bracelet, Professional Ed White Mod, Box + Warranty Card

Omega - FOIS · $4,250
Up for sale is my Numbered Editon Omega Speedmaster FOIS (First Omega in Space) in very good condition, featuring a professionally installed Ed White–style mod that gives it a beautifully vintage, classic Speedmaster look.

  • Condition: Excellent overall with light, honest wear
  • Bracelet: Uncle Seiko Lincoln bracelet, 6.75 inches long with extra links
  • Case Size: 40mm diameter
Posted at
Oct 26, 2025, 2:51 PM
Active
[WTS] Omega Speedmaster Moonphase

Omega Speedmaster Moonphase

Omega - 3575.20 · $5,225
Up for sale is an Omega Speedmaster Moonphase ref. 3575.20 in excellent condition! Very minimal signs of wear, runs great and includes full kit.

  • Condition: Excellent
  • Shipping restrictions: CONUS only
Posted at
Oct 26, 2025, 2:01 PM
Active
[WTS] 2023 Omega Speedmaster Moonwatch Professional | 310.30.42.50.01.002 | Complete | Sapphire Sandwich | Speedy | Micro-adjust Clasp

2023 Omega Speedmaster Moonwatch Professional | 310.30.42.50.01.002 | Complete | Sapphire Sandwich | Speedy | Micro-adjust Clasp

A gorgeous watch highlighted by the two sapphire crystals, and makes for arguably the perfect daily; comfortable, simple, and practical.

  • Condition: Excellent
  • Reference type: Professional
  • Crystal material: Sapphire
  • Movement: Calibre GA
Posted at
Oct 26, 2025, 12:26 PM
Active
[WTS] NEW 2025 Omega Speedmaster Professional Moonwatch ‘Silver Snoopy Award’ - Ref. 310.32.42.50.02.001 - $14,430

NEW 2025 Omega Speedmaster Professional Moonwatch ‘Silver Snoopy Award’ - Ref. 310.32.42.50.02.001 - $14,430

Omega - 310.32.42.50.02.001 · $14,430
The 'Silver Snoopy Award' 50th Anniversary edition Omega Speedmaster Professional Moonwatch features blue sub-dials and a bezel, along with a unique caseback.

  • Condition: Brand New
  • Year: 2025
  • Set Contents: full set with inner + outer box, cards, special loupe, cleaning cloth and instruction manuals
Posted at
Oct 26, 2025, 7:53 AM
Active
[WTS] 2024 Omega Speedmaster Moonwatch Sapphire REF 31030425001002 Full kit (Box, Papers, Extra links)

2024 Omega Speedmaster Moonwatch Sapphire REF 31030425001002 Full kit (Box, Papers, Extra links)

Omega - 31030425001002 · $6,999
2024 Omega Speedmaster Moonwatch Sapphire in excellent condition, barely worn, and well-kept. Includes full box, papers, extra links, and owners manual.

  • Condition: Pre-owned (2024 piece, well kept and in amazing condition)
  • Year: 2024
  • Included Accessories: Full box, papers, extra links, owners manual
Posted at
Oct 26, 2025, 12:14 AM
Active
[WTS] Omega Speedmaster Reduced 3510.50 Recently Serviced

Omega Speedmaster Reduced 3510.50 Recently Serviced

Omega - 3510.50.00 · $2,300
The Omega Speedmaster Reduced ref. 3510.50.00 delivers the iconic Moonwatch look in a more compact, automatic format, with its 39 mm stainless-steel case and black dial.

  • Condition: Excellent overall following a recent complete service
  • Case Diameter: 39mm
  • Case Material: Stainless steel
  • Bezel: Black aluminum tachymeter (minor mark near '60')
Posted at
Oct 25, 2025, 11:05 PM
Active
[WTS] Omega Speedmaster3590.50 – Unpolished Classic

Omega Speedmaster3590.50 – Unpolished Classic

Omega - 3590.50 · $55,000
a classic, unpolished Omega Speedmaster with a unique character

  • Material: steel
  • Band: leather strap
Posted at
Oct 25, 2025, 9:37 PM
Active
[WTS]: Omega Speedmaster Professional Moonwatch Full kit 12/24

: Omega Speedmaster Professional Moonwatch Full kit 12/24

This Omega Speedmaster Professional Moonwatch Hesalite is a full kit in very good condition. It features a Hesalite crystal and comes with a warranty card dated 12/24.

  • Condition: Very nice shape, small marks and scratches
  • Warranty card date: 12/24
  • Shipping method: FedEx
Posted at
Oct 25, 2025, 7:34 PM
Active
[WTS] Omega Speedmaster. Moonwatch. 3570.50. Strong Lume.

Omega Speedmaster. Moonwatch. 3570.50. Strong Lume.

Omega - 3570.50 · $3,600
This is an Omega Speedmaster Moonwatch, a model known for its strong lume and moon phase display.

  • Lume strength: strong
  • Shipping: Fedex with insurance
  • Location: NJ USA
Posted at
Oct 25, 2025, 5:38 PM
Active