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 Professional Moonwatch Full Set

Omega Speedmaster Professional Moonwatch Full Set

Omega - 310.30.42.50.01.001 · $10,900
A timeless and iconic Omega Speedmaster Professional Moonwatch in its traditional hesalite configuration.

  • Condition: Very good overall condition with very light cosmetic marks on the hesalite crystal.
  • Case size: 42mm
  • Crystal type: Hesalite
Posted at
Feb 10, 2026, 1:22 AM
Active
[WTS] 2021 Omega Speedmaster Moonwatch 42mm 310.30.42.50.01.001 Stainless Steel Black Dial - $5,900

2021 Omega Speedmaster Moonwatch 42mm 310.30.42.50.01.001 Stainless Steel Black Dial - $5,900

This is a 2021 Omega Speedmaster Moonwatch Chronograph with a stainless steel black dial and Hesalite crystal.

  • Condition: Excellent overall condition
  • Box: Original Double Omega boxed
  • Papers: Yes (Box and Papers)
  • Warranty: 5 year manufacturer warranty
Posted at
Feb 4, 2026, 3:08 PM
Active

2021 Omega Speedmaster Moonwatch 42mm 310.30.42.50.01.001 Stainless Steel Black Dial - $5,900

2021 Omega Speedmaster Moonwatch in stainless steel with a black dial and 42mm case size.

  • Case size: 42mm
Posted at
Feb 4, 2026, 3:06 PM
Active
Omega Speedmaster Moonwatch Hesalite - 3861 - 310.30.42.50.01.001 (new / 2025)

Omega Speedmaster Moonwatch Hesalite - 3861 - 310.30.42.50.01.001 (new / 2025)

A brand new Omega Speedmaster Moonwatch Professional Hesalite with a stainless steel case and 3861 Omega Master Chronometer movement.

  • Condition: Brand new
  • Case size: 42mm diameter
  • Movement: Omega Master Chronometer
Posted at
Apr 4, 2025, 2:52 PM
Active

2022 Omega Speedmaster Moonwatch Professional Hesalite 42mm 310.30.42.50.01.001

A 2022 Omega Speedmaster Moonwatch Professional Hesalite 42mm, the first watch worn on the moon.

  • Condition: Excellent Pre-owned condition
  • Box And Paper: Complete set comes with inner & outer boxes, Warranty Card, Pictogram, Master Chronometer, instruction booklet and black travel case
  • Accessories: original sticker, cleaning cloth and Moonwatch Booklet
Posted at
Mar 11, 2025, 3:18 PM
Active
2023 Omega Speedmaster 31030425001001 � Box + Papers + extra Nato

2023 Omega Speedmaster 31030425001001 � Box + Papers + extra Nato

Omega - 31030425001001 · $5,470
The Omega Speedmaster reference 31030425001001 is an iconic timepiece that balances heritage and sophistication. Its classic black dial exudes confidence and beauty, paired with a sleek stainless steel bracelet for versatility.

  • Condition: Attractive condition with light signs of wear, as expected from a watch worn a handful of times
  • Case Size: 42mm diameter
  • Movement Type: Original Omega Automatic movement
  • Bracelet Fit: 7.9 inch wrist
Posted at
Mar 3, 2025, 5:43 PM
Active
2021 Omega Speedmaster Moonwatch 42mm 310.30.42.50.01.001 Steel Black Dial

2021 Omega Speedmaster Moonwatch 42mm 310.30.42.50.01.001 Steel Black Dial

This is a 2021 Omega Speedmaster Moonwatch 42mm watch with a stainless steel black dial and Hesalite crystal.

  • Condition: Excellent overall condition
  • Original boxed: true
  • Papers included: true
  • Warranty card date: 2021
Posted at
Feb 13, 2025, 11:40 AM
Active
[WTS] 2022 Omega Speedmaster Moonwatch 42mm 310.30.42.50.01.001 Black Dial - $6,050

2022 Omega Speedmaster Moonwatch 42mm 310.30.42.50.01.001 Black Dial - $6,050

A 2022 Omega Speedmaster Moonwatch Chronograph in stainless steel with a black dial, featuring a Hesalite crystal and a 5-year manufacturer warranty.

Posted at
Feb 11, 2026, 1:49 PM
Active
[WTS] Omega Speedmaster First Omega in Space (FOIS) w/ Box & Papers

Omega Speedmaster First Omega in Space (FOIS) w/ Box & Papers

Up for sale is my Omega Speedmaster First Omega in Space (FOIS) ref.310.30.40.50.06.001. I am the original owner, purchased new from my local Omega Boutique.

  • Condition: Very good condition, some light signs of wear
  • Box And Papers: Yes, including original box, warranty, pictogram, and chronometer cards
  • Shipping: Within Continental United States or internationally at additional cost
Posted at
Feb 11, 2026, 7:00 PM
Active