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 Speedmaster Moonwatch “Reverse Panda” Ref: 310.30.42.50.01.004 (2026) Like New Complete $10,250

Omega - 310.30.42.50.01.004 · $10,250

A modern Omega Speedmaster Moonwatch with a unique 'Reverse Panda' dial and the upgraded 3861 METAS movement in excellent condition.

Condition: Excellent, like new
Case size: 42mm
Movement: Calibre 3861, manual-wind, Co-Axial Master Chronometer (METAS)
Power reserve: 50hr

Posted at

Apr 28, 2026, 9:19 PM

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Omega Speedmaster Date 3513.50 39mm - $1,790

Omega - 3513.50 · $1,790

This is an Omega Speedmaster Date 3513.50, a 39mm automatic watch with an Omega Calibre 1152 movement.

Condition: Very good condition for its age
Case size: 39mm diameter
Movement: automatic Calibre 1152
Bracelet length: up to 7-7.25 inch wrists depending on wrist shape

Posted at

Apr 28, 2026, 9:01 PM

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Omega Speedmaster Moonphase 🍫

Omega - 304.23.44.52.13.001 · $8,500

This Omega Speedmaster Moonphase is a two-tone model featuring steel and Sedna gold, housed in a 44mm case.

Condition: Very good condition with some normal wear
Movement: Cal 9904
Size: 44mm diameter

Posted at

Apr 28, 2026, 9:00 PM

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Omega. Speedmaster. Reverse Panda. Complete Set. $2099 Only

Omega - Speedmaster · $2,099

This Omega Speedmaster is a Reverse Panda model, complete with its original set including warranty, tag, inner and outer box, and two booklets.

Condition: 7.75/10 with wear around bezel
Bracelet size: 20 links
Warranty status: Complete
Box condition: Inner and Outer Box, 2 booklets

Posted at

Apr 28, 2026, 8:36 PM

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(Omega) Speedmaster Date 3511.50 Full Set $2,099

Omega - 3511.50 · $2,099

For sale is an Omega Speedmaster Date, reference 3511.50, a reduced variant made for the Japanese market. This automatic watch features a 39mm case and 18mm lugs.

Condition: Excellent external condition, running well internally
Case size: 39mm diameter
Lug-to-lug length: 45mm
Thickness: 13.8mm

Posted at

Apr 28, 2026, 8:18 PM

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Omega Speedmaster Reduced - Mother of Pearl - White Dial - Factory Strap

Omega - Speedmaster Reduced · $2,350

A rare and unique Omega Speedmaster reduced model with a 39mm case, featuring a stunning Mother of Pearl dial.

Condition: Good condition for the age
Case size: 39mm
Strap type: Factory Omega leather strap

Posted at

Apr 28, 2026, 5:37 PM

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Omega Speedmaster Racing - 32630405001002

Omega - 32630405001002 · $2,999

This Omega Speedmaster Racing is in good condition, having been worn a handful of times. It features desk diving scratches on the clasp.

Condition: Pre-owned, minor scratches
Scratches location: Clasp
Shipping discussion possible: true

Posted at

Apr 28, 2026, 5:06 PM

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Omega Speedmaster Moonwatch Hesalite 1861 3570.50.00 ( excellent / 2007 / box and papers )

Omega - 3570.50.00 · $4,750

This Omega Speedmaster Moonwatch Professional Chronograph 1861 is a 42mm stainless steel watch with Hesalite crystal, reference # 3570.50.00.

Condition: Excellent condition
Case size: 42mm diameter
Movement: 1861 Omega Calibre

Posted at

Apr 28, 2026, 1:36 PM

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Omega Speedmaster Sapphire New 2026, $7500

Omega - 310.30.42.50.01.002 · $7,500

This listing is for a brand new Omega Speedmaster Sapphire, featuring a reference number of 310.30.42.50.01.002 and coming with its original box and warranty.

Condition: Brand New Condition
Shipping Cost: $150 for USA
Payment Methods: Wire or Credit Card (+4.9% & 4 days clearance)
Warranty Year: 2026

Posted at

Apr 28, 2026, 10:35 AM

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