Omega Speedmaster Speedmaster Professional Moonwatch

Reference 3870.50.31

About this watch

The Omega Speedmaster Professional Moonwatch (model 3870.50.31) is a masterpiece of watchmaking. This iconic timepiece has been to the moon and back, thanks to its association with the Apollo 11 mission in 1969. At its heart lies the Omega caliber 1861, a hand-wound movement that's both reliable and precise. With a frequency of 21,600 vibrations per hour and a power reserve of 48 hours, this watch is designed to keep you on time for your next adventure. The black dial is elegantly accented by stick and dot indexes, making it both readable and stylish. Its stainless steel case with a round shape and diameter of 42.00 mm exudes sophistication, while the tachymetric bezel adds a sporty edge. Whether you're in a boardroom or at a casual gathering, this watch makes a statement. The Speedmaster's versatility is unmatched, effortlessly transitioning from a dress watch to a casual piece. Pair it with a crisp suit or a relaxed T-shirt, and it fits right in. Its durability and accuracy have made it the perfect companion for astronauts, and its rich heritage is a testament to Omega's engineering prowess.

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MSRP: $4,400

Market Price: $4,139

Key Features

Omega caliber 1861 hand-wound movement
50-meter water resistance
42mm stainless steel case with black dial
Tachymetric bezel
Chronograph functionality with small seconds, hours, and minutes hands

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch

Reference

3870.50.31

Movement

1861

Movement Features

Small Seconds, Hours, Minutes
Chronograph

Case

Stainless Steel 42mm

Dial Color

Black

Crystal

Plexi

Water Resistance

Current Listings

Omega OEM Deployant Clasp – Speedmaster Ref. 117Z017553 – Micro-Adjustment - 3861 Upgrade Kit

Omega - 117Z017553 · $175

A clasp kit designed for Omega Speedmaster bracelets, featuring a micro-adjustment feature and made of stainless steel. It is an OEM replacement or upgrade option for precise sizing.

Condition: Excellent – minimal wear, fully functional
Fitment: Omega Speedmaster bracelets
Material: Stainless steel
Feature: Micro-adjustment for precise sizing

Posted at

Oct 27, 2025, 5:47 AM

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Omega Speedmaster Michael Schumacher 39mm (previously ebay authenticated with card) naked watch, have box not original box

This Omega Speedmaster Michael Schumacher edition is a naked watch without its original box. It has been eBay authenticated and comes with the authentication card.

Posted at

Oct 26, 2025, 9:54 PM

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Omega Speedmaster Professional White 42MM - Ref 310.30.42.50.04.001 - 04/25

Omega - 310.30.42.50.04.001 · $6,800

A 42MM Omega Speedmaster Professional White, a popular and highly sought-after model known for its reliability and style.

Condition: preowned in fantastic condition
Case size: 42mm

Posted at

Oct 26, 2025, 6:16 PM

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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

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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

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

Omega - 310.30.42.50.01.002 · $6,417

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

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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

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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

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