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 - 311.92.44.51.01.007 (Dark Side of the Moon)

Omega - 311.92.44.51.01.007

The Dark Side of the Moon is a limited edition Omega Speedmaster reference 311.92.44.51.01.007.

Model name: Dark Side of the Moon

Posted at

May 13, 2026, 2:02 PM

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OMEGA Speedmaster Moonwatch 3861 Sapphire Sandwich - Very Good Condition - Watch Only on Hirsch Robby Sailcloth - ONLY $4999 SHIPPED CONUS

OMEGA - Speedmaster Moonwatch 3861 Sapphire Sandwich · $4,999

This OMEGA Speedmaster Moonwatch is for sale, a well-cared-for timepiece that runs perfectly and comes with a worn Hirsch Robby sailcloth strap. The watch has been well-maintained and shows minimal signs of wear.

Condition: Very Good Condition
Strap Material: sailcloth
Case Back: sapphire

Posted at

May 13, 2026, 10:13 AM

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Omega Speedmaster Date (3513.30)

Omega - 3513.30 · $2,425

This Omega Speedmaster date features a silver dial on a steel bracelet, produced from 1998-2010. It comes with the hangtag and an open warranty card.

Condition: excellent condition for its age
Case Size: 39mm diameter
Case Material: stainless steel
Bracelet Material: stainless steel

Posted at

May 13, 2026, 8:25 AM

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Omega Speedmaster 3523.80 39mm - $1,750

Omega - 3523.80 · $1,750

Up for sale is my Omega Speedmaster 3523.80 39mm, an automatic caliber Omega 1151 movement in a steel case on original Omega steel bracelet.

Condition: Great condition with minimal hairlines/marks on case, caseback, and bracelet
Caliber: Omega 1151 movement
Case size: 39mm diameter
Bracelet length adjustment: up to 7-7.25 inch wrists

Posted at

May 13, 2026, 4:06 AM

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Omega. Speedmaster. Reverse Panda. Box and Papers. $1999 Massive Reduction!!

Omega - Speedmaster. Reverse Panda · $1,999

This Omega Speedmaster Reverse Panda is a high-end watch featuring a unique reverse panda dial. It comes complete with its original box, papers, and warranty.

Condition: 7.75/10, has wear around bezel and some flea bites on crystal
Bracelet length: ~20 links to fit 7inch wrist
Condition rating: 7.75/10

Posted at

May 12, 2026, 9:13 PM

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