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 Reduced - Mother of Pearl - White Dial - Factory Strap

Omega - Speedmaster Reduced · $2,350

A super 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: Leather (factory)
Bezel wear: Some wear

Posted at

Apr 18, 2026, 5:59 PM

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2023 Omega Speedmaster ’57 Blue Dial 41.5mm 332.10.41.51.03.001 Full Set Excellent

Omega - 332.10.41.51.03.001 · $8,300

The Omega Speedmaster '57 features a striking sun-brushed blue dial with vintage-inspired hands and recessed sub-dials, paying homage to the iconic original.

Condition: Excellent
Diameter: 40.5mm
Material: stainless steel

Posted at

Apr 18, 2026, 2:38 PM

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2024 Omega Speedmaster ’57 Sedna Gold Two-Tone 41.5mm 331.22.42.51.01.001 Full Set Excellent

Omega - 331.22.42.51.01.001 · $7,450

A vintage-inspired Speedmaster with modern Master Co-Axial engineering, featuring 18K Sedna gold case and black dial.

Condition: Excellent
Case material: 18K Sedna gold
Diameter: 41.5mm

Posted at

Apr 18, 2026, 2:33 PM

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Omega Speedmaster 3513.20 Chrnograph Olympic Special Edition Blue Red Hands |Good conditon| Serviced| Full Box Paper Tag| 2300$

Omega - 3513.20 · $2,300

This Omega Speedmaster stands out with its white dial and eye-catching red and blue hands, making it a unique piece.

Condition: Good Condition, Serviced
Case Size: 39mm diameter
Crystal: Sapphire crystal
Lug Width: 20mm

Posted at

Apr 18, 2026, 12:59 PM

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Omega Speedmaster Day-Date "Reduced" | Black Dial Ref. 3520.50 | 39mm | Stainless Steel | Full Collector's Set

Omega - 3520.50 · $62,000

This Omega Speedmaster Day-Date is a black dial model with reference number 3520.50 and features a 39mm stainless steel case.

Size: 39mm diameter

Posted at

Apr 18, 2026, 11:53 AM

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Omega Speedmaster Automatic 3513.50 - Suede Leather Strap - Good Condition

Omega - 3513.50 · $1,800

A 39mm Omega Speedmaster Automatic with automatic winding, date display, running seconds, chronograph minutes, and chronograph hours features.

Condition: Good condition with signs of wear
Case size: 39mm
Material: Automatic

Posted at

Apr 18, 2026, 11:51 AM

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Omega Speedmaster Professional (310.30.42.50.04.001)

Omega - 310.30.42.50.04.001 · $7,600

This Omega Speedmaster Professional features a white dial on a steel bracelet, with a case size of 42mm. It is powered by the manual caliber 3861 movement and comes with boxes, booklet, and warranty card.

Condition: Excellent
Case Size: 42mm
Case Material: Stainless Steel
Bracelet Material: Stainless Steel

Posted at

Apr 18, 2026, 8:01 AM

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OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥

OMEGA - 311.92.44.30.01.001 · $10,000

This OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 is a commemorative watch crafted from black ceramic, featuring a skeletonized dial and laser-ablated details to represent the lunar surface. It's powered by the Calibre 1869 movement with blackened bridges and mainplate.

Condition: UNWORN
Case size: 44.25mm diameter
Movement: Calibre 1869

Posted at

Apr 17, 2026, 10:12 PM

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