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 Hesalite (ref. 3103042500100)

Omega - 3103042500100 · $5,350

A recently serviced Omega Speedmaster Professional Moonwatch with a newer 3861 movement, featuring Hesalite crystal. The watch comes with full set, including warranty card, pictograms, master chronometer certification, and extra links.

Condition: Very good, some small marks on the case and desk diving marks on the clasp
Movement: 3861, newer
Set included: full set, warranty card dated January 2021, pictograms, master chronometer certification, extra links

Posted at

Apr 20, 2026, 7:12 PM

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[US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW

Omega - 310.30.42.50.01.004 · $10,850

This Omega Speedmaster Moonwatch Professional is a 42mm Reverse Panda model available as a full set, complete with all original accessories.

Condition: Brand new, unworn, and in pristine condition
Case Size: 42mm
Set Contents: Watch,Box (inner & outer),Travel case,Historical booklet,User manual,Microfiber cloth,Master chronometer card,Warranty card

Posted at

Apr 20, 2026, 6:44 PM

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Omega Speedmaster Moonwatch Exhibition Back 3592.50 Apollo XI Watch

Omega - Speedmaster Moonwatch Exhibition Back 3592.50 Apollo XI

Image link: https://imgur.com/a/2pYMJf8

Posted at

Apr 20, 2026, 11:37 AM

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Omega Speedmaster Triple Calendar Blue Sunburst Dial 3523.80 39mm | Great Condition (Serviced) | $2500

Omega - 3523.80 · $2,500

This Omega Speedmaster Triple Calendar features a blue sunburst dial, stainless steel case, and automatic movement. It's compact at 39mm and comes with an OEM bracelet.

Condition: Great condition, serviced
Movement: Omega Cal. 1151 (based on Valjoux 7751)
Case dimensions: 44.7mm lug-to-lug, 13–14mm thickness
Bracelet: OEM, fits up to 19cm (7.5 inches)

Posted at

Apr 20, 2026, 12:03 AM

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Omega Speedmaster Racing Reverse Panda dial New/ unworn Full set 6/2025

Omega - 326.30.40.50.01.002 · $4,300

The Omega Speedmaster Racing features a black dial with classic Speedmaster heritage and modern refinements, offering an ideal balance of sportiness and versatility.

Condition: New/unworn
Case Size: 40mm
Bracelet Length: 7-inch
Warranty Expiration: 6/2025

Posted at

Apr 19, 2026, 4:31 PM

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Omega Speedmaster Racing - 329.30.44.51.01.001 - Box and Papers

Omega - 329.30.44.51.01.001 · $5,795

This is a Omega Speedmaster Racing Chronograph, model number 329.30.44.51.01.001, in pre-owned condition.

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

Posted at

Apr 19, 2026, 1:53 PM

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Omega Speedmaster Date Chronometer 3210.50.00 — Big Seahorse, Cal. 1164 (Serviced) — $2,150 Shipped (Tariff Coverd)

Omega - 3210.50.00 · $2,150

This Omega Speedmaster Date Chronometer features a classic black dial and iconic tachymeter bezel, paired with the Cal. 1164 automatic chronometer-certified movement.

Condition: Honest wear consistent with age, minor signs of use on bezel insert
Case size: 40mm diameter
Movement: Cal. 1164 (ETA 7750 base)
Water resistance: unknown

Posted at

Apr 19, 2026, 8:21 AM

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Omega Speedmaster Moonwatch Sapphire / 310.30.42.50.01.002 / 2022 full set under warranty - $5950

Omega - 310.30.42.50.01.002 · $5,950

For sale is a Omega Speedmaster Moonwatch Sapphire Sandwich, overall in excellent condition.

Condition: Overall excellent condition with normal marks on the case, bracelet, clasp, and caseback
Year: 2022
Warranty: under warranty

Posted at

Apr 18, 2026, 9:40 PM

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Rare Vintage Omega Speedmaster Teutonic Ghost Gray Dial Ref 145.0044

Omega - 145.0044 · $2,795

This is a rare vintage Omega Speedmaster Teutonic model made for the German market in the early 1980s. It features a unique gray dial, bead-blasted case, and integrated bracelet.

Condition: Pre-owned, with wear
Diameter: 42mm
Movement: Manual wound Omega cal 861
Bracelet length: fits up to app 7.25 inches

Posted at

Apr 18, 2026, 9:08 PM

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