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 Racing 326.30.40.50.01.001 – Full Set

Omega - 326.30.40.50.01.001 · $3,100

Omega Speedmaster Racing, one of the seller's favorite watches, barely worn and in excellent condition.

Condition: ~95% - minor scratches on clasp
Scratch Location: clasp

Posted at

Apr 23, 2026, 8:41 PM

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Omega Speedmaster Professional Moonwatch – Ref. 310.30.42.50.01.001 – Excellent Condition – 2022

Omega - 310.30.42.50.01.001 · $5,499

This Omega Speedmaster Professional Moonwatch features the iconic Hesalite crystal and manual-wind Master Chronometer movement 3861, staying true to its heritage while adding updated movement technology and finishing.

Condition: Excellent, minimal hairline scratches.
Case Size: 42mm
Movement: Manual-wind Co-Axial Master Chronometer (Cal. 3861)
Crystal: Hesalite

Posted at

Apr 23, 2026, 6:43 PM

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Omega Speedmaster 40 3211.31

Omega - 3211.31 · $2,299

This Omega Speedmaster 40 is a watch with a 40mm diameter, featuring a 7" bracelet.

Condition: Watch only (minor scratch)
Case Size: 40mm
Bracelet Length: 7 inches

Posted at

Apr 23, 2026, 6:13 PM

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BNIB 2026 Omega Speedmaster Professional White $7,899

Omega - 310.30.42.50.04.001 · $7,899

The Omega Speedmaster Moonwatch Professional features a glossy white lacquered dial, black markers, and red 'Speedmaster' text, with a modern and luxurious look thanks to its sapphire crystal. The 42mm case wears comfortably with a 5mm tapered bracelet. It's powered by the hand-wound Cal 3861 movement.

Condition: Brand new in box with no issues
Case size: 42mm diameter
Case thickness: 13.2mm
Lug width: 20mm

Posted at

Apr 23, 2026, 6:12 PM

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Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.02.001

Omega - 324.30.38.50.02.001 · $3,999

This Omega Speedmaster 38 Co-Axial Chronograph features a silver dial and comes with various accessories such as the original Omega stainless steel bracelet, inner box, outer box, instruction manual, pictograms card, Watchfinder certificate of authenticity, and an Omega Cream Watch Pouch.

Condition: Excellent overall condition with very minimal wear
Bracelet condition: Brand-new, unworn
Includes: Omega inner box, outer box, instruction manual, pictograms card, Watchfinder certificate of authenticity, cream watch pouch

Posted at

Apr 23, 2026, 6:05 PM

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2022 Omega Speedmaster Dark Side Of The Moon DSOTM "Pitch Black" reference 311.92.44.51.01.004 Box and Papers

Omega - 311.92.44.51.01.004 · $7,327

A bold and modern interpretation of the legendary Speedmaster, featuring an all-black aesthetic that delivers a sleek, stealthy presence on the wrist.

Condition: Excellent
Case size: 44.25mm
Movement: Manual-wind Co-Axial Caliber 1869
Crystal: Sapphire

Posted at

Apr 23, 2026, 3:42 PM

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Omega Speedmaster Broadarrow. Strong Lume.

Omega - Speedmaster Broadarrow · $3,450

A Omega Speedmaster Broadarrow for sale in good condition, with strong lume and running well.

Shipping Method: Fedex with insurance
Shipping Location: NJ USA
Shipping Global Accepted: true

Posted at

Apr 23, 2026, 3:26 PM

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Omega Speedmaster Dark Side of the Moon 44.25mm 310.92.44.51.01.002 ( new / 2025 / box and papers )

Omega - 310.92.44.51.01.002 · $13,550

This Omega Speedmaster Moonwatch Dark Side of the Moon is a brand new watch on Nylon Fabric Strap with Ceramic Clasp, featuring a 44.25mm black ceramic case and Omega Co-Axial Calibre 9900.

Condition: Brand new
Case size: 44.25mm diameter
Movement: Omega Co-Axial Calibre 9900

Posted at

Apr 23, 2026, 2:11 PM

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OMEGA Speedmaster 311.63.44.51.06.001 Dark Side of the Moon Matte Grey w/Box and cards

OMEGA - 311.63.44.51.06.001 · $11,000

A 2021 Omega Dark Side of the Moon Sedna Gold Accent 44mm watch, featuring a laser ablated matte grey dial and an 18k Sedna gold bezel, housed in a ceramic case. The timepiece is comfortable to wear due to its light and durable design.

Condition: good
Case material: ceramic
Case size: 44mm
Diameter: 44mm

Posted at

Apr 23, 2026, 12:27 PM

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