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 Dark Side Of The Moon Speedmaster Ceramic "Dark Vader" 310.92.44.51.01.001

Omega - 310.92.44.51.01.001 · $13,650

This Omega Speedmaster Dark Side of the Moon 'Dark Vader' combines a slim manual wind case with a matte finished grained dial and striking red lacquered chrono seconds hand.

Condition: Excellent (mint condition)
Calibre: OMEGA 9908 Black Edition
Power reserve: 60 hours
Crystal type: scratch-resistant sapphire crystal with anti-reflective treatment on both sides

Posted at

May 2, 2026, 9:14 PM

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Omega Speedmaster Professional Hesalite. Full Set.

Omega - 3861 · $5,500

The Omega Speedmaster Professional Hesalite is a chronometer that comes in very good condition. It has been used occasionally and keeps excellent time. The watch includes the full set of original accessories.

Condition: very good
Warranty Cards: 2 sets (dated 3/6/2021)
Originality: full set
Case Condition: minor scratches

Posted at

May 2, 2026, 7:19 PM

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Omega Speedmaster Chrono Blue Dial 43mm - 329.30.43.51.03.001 Full Set - Like New Condition - Houston, TX 🔥💰6,297💰🔥 + 🏷️

Omega - 329.30.43.51.03.001 · $6,297

The Omega Speedmaster Chronoscope is a stylish and functional wristwatch designed for unisex adults with a blue dial, mechanical manual movement, water resistance up to 50 meters, and chronometer function.

Condition: Like new
Case Size: 43mm
Water Resistance: 50m
Movement: Mechanical manual movement

Posted at

May 2, 2026, 5:10 PM

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Omega Speedmaster Moonwatch Sapphire Sandwich (310.30.42.50.01.002) - $5950

Omega - 310.30.42.50.01.002 · $5,950

A Omega Speedmaster Moonwatch Sapphire Sandwich, a high-quality timepiece featuring a sapphire crystal sandwich case.

Condition: Overall excellent condition with light marks on the case, bracelet, clasp, and caseback
Water Resistance: meters deep
Movement Type: Master Chronometer
Box And Papers: full set

Posted at

May 2, 2026, 4:47 PM

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2021 Omega Speedmaster Racing 329.32.44.51.01.001 Orange Full Set - $6,495

Omega - 329.32.44.51.01.001 · $6,495

This Omega Speedmaster Racing is a 2021 model with an orange dial and features a sporty design.

Condition: Excellent condition
Year: 2021
Contents: Watch, Inner & Outer Box, Card Holder, International Warranty Card, Pictograms Card, Master Chronometer Card, Instructions Manual

Posted at

May 2, 2026, 12:43 PM

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Omega Speedmaster Moonphase 304.33.44.52.01.001

Omega - 304.33.44.52.01.001 · $7,550

This Omega Speedmaster features a moonphase complication and automatic co-axial movement 9904, housed in a 44.25mm case with original strap.

Condition: Good pre-owned condition
Size: 44.25mm diameter
Movement: Automatic (Co-Axial 9904)
Strap: Original leather strap

Posted at

May 2, 2026, 10:29 AM

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REPOST OMEGA SPEEDMASTER DATE 3513.50 WITH PAPERS

OMEGA - 3513.50 · $1,750

A lightly worn Omega Speedmaster Date with a clean dial and crystal, accurate timekeeping.

Condition: lightly worn
Box: no box
Papers: yes
Crystal condition: clean

Posted at

May 2, 2026, 9:57 AM

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2026 Omega Speedmaster Professional White Dial 310.32.42.50.04.002 Full Set $7,300

Omega - 310.32.42.50.04.002 · $7,300

A modern Omega Speedmaster Professional White Dial featuring a lacquered white dial, powered by the Omega Co-Axial Master Chronometer Calibre 3861, with a clean and high-contrast look.

Condition: Like new
Case size: 42mm diameter
Case material: Stainless steel
Movement: Manual wind (Omega Calibre 3861 Master Chronometer)

Posted at

May 2, 2026, 9:21 AM

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OMEGA Speedmaster Professional Moonwatch Sapphire 310.30.42.50.01.002 — Full Set — Micro-Adjust Clasp

Omega - 310.30.42.50.01.002 · $6,999

This Omega Speedmaster Professional Moonwatch features a black dial, sapphire crystal, and exhibition caseback showcasing the Omega Caliber 3861 Master Chronometer movement.

Condition: Excellent pre-owned condition
Case Size: 42mm diameter
Dial Color: Black
Crystal Type: Sapphire (Front & Exhibition Caseback)

Posted at

May 2, 2026, 4:31 AM

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