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

2025 Omega Speedmaster Professional "Sapphire Sandwich" 310.30.42.50.01.002

Omega - 310.30.42.50.01.002 · $5,600

A lightly worn Omega Speedmaster Professional with a Calibre 3861 movement, sapphire crystals, and an aluminum tachymeter bezel.

Condition: lightly worn; excellent shape
Movement: Calibre 3861
Caseback: factory sealed, no modifications made
Bracelet: OEM steel bracelet, fully linked and comfortable to wear

Posted at

May 6, 2026, 2:46 PM

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Omega Speedmaster Moonwatch 3861 Sapphire 310.30.42.50.01.002 ( new / 2026 / box and papers )

Omega - 310.30.42.50.01.002 · $7,250

This is an Omega Speedmaster Moonwatch Professional Sapphire with a 42mm stainless steel case and 3861 Omega Master Chronometer Movement.

Condition: Brand new
Case size: 42mm diameter
Movement: 3861 Omega Master Chronometer Movement

Posted at

May 6, 2026, 12:55 PM

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Omega Speedmaster Moonwatch 3861 Hesalite 310.30.42.50.01.001 ( new / 2026 / box and papers )

Omega - 310.30.42.50.01.001 · $6,250

This Omega Speedmaster Moonwatch Professional is a brand new watch with all original packaging and papers, featuring a stainless steel case and 3861 Omega Master Chronometer Movement.

Condition: Brand new
Case size: 42mm diameter
Movement type: Master Chronometer

Posted at

May 6, 2026, 12:46 PM

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Omega Speedmaster Milano Cortina 2026 (Full Set, Like New)

Omega - 522.30.38.50.04.001 · $6,900

The Omega Speedmaster Milano Cortina 2026 features a varnished white dial with a frosted blue pattern, a stamped Olympic medallion caseback and is part of the full set with boxes, warranty card and other accessories.

Condition: Like New
Case size: 38mm diameter
Thickness: 14.75mm
Lug to lug length: 44.96mm

Posted at

May 5, 2026, 10:07 PM

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- 1985 Omega Speedmaster Pro 3590.50 with Hang Tag - $5,800

Omega - 3590.50 · $5,800

This 1985 Omega Speedmaster Professional features a 42mm stainless steel case with a matte black tritium dial and black aluminum bezel insert. The watch has developed a beautiful patina over time, and the lume has aged to a cappuccino-like hue.

Condition: Excellent, unpolished condition with light wear for its age
Case size: 42mm
Bracelet length: Up to 19.5 cm / 7.67"
Crystal material: Hesalite

Posted at

May 5, 2026, 9:28 PM

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