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

20mm Omega Speedmaster Bracelet 1499 / 842 – Production (1996–1998)

Omega - 1499/842 · $550

A high-quality Omega factory bracelet option with excellent build and taper, known among Speedmaster collectors.

Length: 20mm
Production period: 1996-1998

Posted at

Jan 4, 2026, 11:18 AM

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Omega. Speedmaster Moonwatch. Anniversary Series Apollo XV. $5350 Only - Steal!

Omega - 311.30.42.30.01.003 · $5,350

A pre-owned Omega Speedmaster Moonwatch from the Anniversary Series Apollo XV, featuring a 42mm black dial with blue and red accents.

Condition: Good condition (7.5/10)
Bracelet size: fits up to 7.5 inch hand
Price compared to comps: thousands below comparable prices

Posted at

Jan 3, 2026, 9:55 PM

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Omega Speedmaster Professional Moonwatch "Sapphire Sandwich" 310.30.42.50.01.002 Complete Set

Omega - 310.30.42.50.01.002 · $7,995

This Omega Speedmaster Professional Moonwatch 'Sapphire Sandwich' is a direct descendant of the Speedmaster worn during all six Apollo lunar landings, featuring a 42 mm stainless steel case with asymmetrical lugs, black anodized aluminum bezel, and a Master Chronometer certified by METAS.

Condition: Excellent Pre-Owned Condition
Box Papers: Yes, Complete Set
Warranty: Until 2030
Movement: Omega Co-Axial Master Chronometer Calibre 3861

Posted at

Jan 3, 2026, 9:42 PM

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Omega Speedmaster 'Gemini 4' | Day 10/12 | 12 Days of Christmas🎄

Omega - 145.0229 · $5,500

A tribute to the first American spacewalk (Gemini IV, 1965), this Omega Speedmaster commemorates one of humanity's most defining moments of aspiration, capturing the spirit of courage and vision.

Bracelet type: upgraded Omega flat-link
Original bracelet swap available: true
Shipping method: FedEx fully insured

Posted at

Jan 3, 2026, 9:13 PM

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Omega Speedmaster Moonphase Blue Dial 44mm 2024 Box & Papers

Omega - 304.33.44.52.03.001 · $8,250

The Omega Speedmaster Moonphase is a complication-driven take on the iconic Speedmaster, combining a classic chronograph layout with a beautifully executed moonphase display and a deep blue dial.

Condition: Excellent
Size: 44mm diameter
Water Resistance: 100m depth rating
Movement Type: Co-Axial automatic movement

Posted at

Jan 3, 2026, 8:22 PM

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Omega Speedmaster Moonphase BOX AND PAPERS 304.33.44.52.03.001

Omega - 304.33.44.52.03.001 · $7,150

For sale is an Omega Speedmaster Moonphase in excellent condition, with only minimal wear on the straps.

Condition: Excellent
Case size: 40mm
Strap type: black leather omega strap

Posted at

Jan 3, 2026, 4:41 PM

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Omega Speedmaster 3510.50 Reduced X2

Omega - 3510.50 · $2,550

Two Omega Speedmaster Reduced watches in excellent condition for sale.

Condition: Excellent
Case Size: 40mm diameter
Payment Methods: Cash, crypto, most credit cards

Posted at

Jan 3, 2026, 3:45 PM

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Omega Speedmaster Professional 3861 Hesalite “Sandwich” – Full AD Kit – 6/24 (spiralwinder caseback) Extras!

Omega - 3861 · $5,995

This Omega Speedmaster Professional Moonwatch is a Hesalite 'sandwich' model with a sapphire display caseback and an original Hesalite caseback included. It features a Cal. 3861 Master Chronometer movement and comes with a full Authorized Dealer kit.

Condition: Daily worn, normal wear/use consistent with daily rotation, never polished
Movement: Cal. 3861 (Master Chronometer)
Bracelet type: Current bracelet with tool-less sliding clasp adjustment
Crystal material: Hesalite, Sapphire

Posted at

Jan 3, 2026, 10:52 AM

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Omega Speedmaster « Broad Arrow » 3594.50

Omega - 3594.50 · $3,600

This Omega Speedmaster Broad Arrow is a highly collectible and historically inspired watch with iconic Broad Arrow hands. It has recently been serviced by a professional watchmaker in France and comes with a 1-year service warranty.

Condition: Excellent overall condition
Service: Recently serviced by a professional watchmaker in France
Warranty: 1-year service warranty from the professional who performed the revision
Bracelet: Original Omega bracelet included

Posted at

Jan 3, 2026, 10:20 AM

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