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

2024 OMEGA SPEEDMASTER PROFESSIONAL- WHITE DIAL - FULL KIT - $7,800

Omega - 310.30.42.50.04.001 · $7,800

The 2024 White Dial Omega Speedmaster Professional features a glossy, lacquered white stepped dial with applied blackened markers and hands. It is powered by the METAS-certified Master Chronometer Calibre 3861 and viewed through a sapphire exhibition caseback.

Condition: Great condition/minor desk diving
Movement: Manual-winding Calibre 3861 (Anti-magnetic to 15,000 gauss)
Dial size: 42mm
Water resistance: unknown

Posted at

Mar 10, 2026, 9:38 PM

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Omega Speedmaster Moonwatch 310.30.42.50.01.002 - Legendary Timepiece

Omega - 310.30.42.50.01.002 · $6,900

The Omega Speedmaster Professional Moonwatch, reference 310.30.42.50.01.002, is an iconic timepiece that combines precision with timeless design. Featuring a robust stainless steel case and a classic black dial, it's not just a watch—it's a piece of history.

Condition: Good
Case material: stainless steel
Dial color: black

Posted at

Mar 10, 2026, 5:32 PM

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Omega Speedmaster Racing - 329.30.44.51.01.001 - Box and Papers - Price Reduced!

Omega - 329.30.44.51.01.001 · $5,850

A Omega Speedmaster Racing Chronograph in the model 329.30.44.51.01.001 features a 44.25mm size and has all functions working as expected.

Condition: pre-owned with minor wear
Size: 44.25mm diameter
Bracelet material: stainless steel

Posted at

Mar 10, 2026, 4:54 PM

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Omega Speedmaster First Omega In Space (FOIS)

Omega - 311.32.40.30.01.001 · $4,250

This Omega Speedmaster "First Omega in Space" features a size of 39.7mm and comes with multiple straps.

Case Size: 39.7mm
Strap Count: 6
Includes: Omega boxes,pictogram card,operating instructions booklet

Posted at

Mar 10, 2026, 1:14 PM

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Omega Speedmaster Reduced 3510.50 Mint Full Set $3250

Omega - 3510.50 · $3,250

A beautiful Omega Speedmaster Reduced from 1998, featuring a matte black dial with white inscriptions and a stainless steel case measuring 39mm.

Condition: Mint
Case size: 39mm diameter
Movement: Automatic Omega caliber 3220 (ETA 2890-2 with Dubois-Depraz chronograph module)
Bracelet type: Omega 1469

Posted at

Mar 10, 2026, 9:03 AM

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Omega Speedmaster Date ref. 3211.30.00 40mm | Great Condition (with Original Box & Serviced) | $2400

Omega - 3211.30.00 · $2,400

A modern Omega Speedmaster Date ref. 3211.30.00 in a clean all-silver dial configuration, featuring an applied index and polished hand design. The watch has a refined and versatile look while maintaining its sporty DNA.

Condition: great condition
Case size: 40mm
Lug to lug: 50mm
Thickness: 15mm

Posted at

Mar 10, 2026, 12:08 AM

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