Omega Speedmaster Speedmaster Professional Moonwatch

Reference 3870.50.31

Omega Speedmaster Professional Moonwatch

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
50

Current Listings

[WTS] Omega Speedmaster Racing - 329.30.44.51.01.001 - Box and Papers - Price Reduced!

Omega Speedmaster Racing - 329.30.44.51.01.001 - Box and Papers - Price Reduced!

Omega - 329.30.44.51.01.001 · $5,695
A pre-owned Omega Speedmaster Racing Chronograph in good condition, featuring a 44.25mm size and coming with its original box, papers, and stainless steel bracelet.

  • Condition: pre-owned with minor wear
  • Size: 44.25mm
  • Bracelet material: stainless steel
  • Payment methods: Zelle, bank wire, or PayPal F&F
Posted at
May 4, 2026, 1:11 PM
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[WTS] Omega Speedmaster Broad Arrow Ref. 321.10.44.50.01.001

Omega Speedmaster Broad Arrow Ref. 321.10.44.50.01.001

Omega - 321.10.44.50.01.001 · $3,600
This Omega Speedmaster Broad Arrow features a 44mm stainless steel case, automatic Co-Axial Caliber 3313 movement, and a textured black dial.

  • Condition: Great condition overall, sapphire crystal clean, textured black dial pristine, stainless steel case shows light wear, automatic movement running good
  • Case Size: 44mm diameter
  • Movement: Automatic Co-Axial Caliber 3313
  • Bracelet Length: fits a 7.5in wrist
Posted at
May 4, 2026, 12:58 PM
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[WTS] Omega Speedmaster 39mm Automatic 3513.82.00 Blue Dial — Cal. 1152 (Serviced) — $2,100 Shipped (Tariff Covered)

Omega Speedmaster 39mm Automatic 3513.82.00 Blue Dial — Cal. 1152 (Serviced) — $2,100 Shipped (Tariff Covered)

Omega - 3513.82.00 · $2,100
This Omega Speedmaster is a 39mm automatic watch featuring a Cal. 1152 movement and a blue dial.

  • Movement: Cal. 1152
  • Size: 39mm diameter
Posted at
May 4, 2026, 11:48 AM
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[WTS] Omega Speedmaster Reduced 3510.50 Mint Full Set $3200

Omega Speedmaster Reduced 3510.50 Mint Full Set $3200

Omega - 3510.50 · $3,200
A beautiful Omega Speedmaster Reduced with a matte black Luminova dial, stainless steel case with twisted lugs, and an automatic Omega caliber 3220 movement.

  • Condition: Mint
  • Movement: Automatic Omega caliber 3220 (ETA 2890-2 with Dubois- Depraz chronograph module)
  • Case size: 39mm diameter
  • Bracelet type: Omega 1469
Posted at
May 4, 2026, 8:51 AM
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[WTS][US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW

[US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW

Omega - 310.30.42.50.01.004 · $10,750
This Omega Speedmaster Moonwatch Professional features a 42mm case and is in full set with its original box, papers, and accessories.

  • Condition: Brand new, unworn, and in pristine condition
  • Case size: 42mm diameter
  • Movement type: mechanical
Posted at
May 4, 2026, 7:32 AM
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[WTS] Nicest Example Out There??? Rare Vintage 18K Gold Omega Speedmaster “Tribute to Astronauts” Ref BA145.022 Unpolished Collector Grade!

Nicest Example Out There??? Rare Vintage 18K Gold Omega Speedmaster “Tribute to Astronauts” Ref BA145.022 Unpolished Collector Grade!

Omega - BA145.022-69 · $47,500
This is a rare vintage 18K gold Omega Speedmaster 'Tribute to Astronauts' ref BA145.022 Unpolished Collector Grade watch, one of only 1014 made starting in November of 1969.

  • Condition: Collector grade, unpolished all original with incredible patina forming on the gold
  • Case size: 42mm
  • Diameter: 42mm
  • Bezel condition: Correct DON (dot over 90) maroon bezel with light wear mostly seen on the edge
Posted at
May 3, 2026, 10:31 PM
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[WTS] Omega Speedmaster Reduced 3510.21 Limited Edition (2,000 Pcs) Marui 39mm , B&P - $5,550

Omega Speedmaster Reduced 3510.21 Limited Edition (2,000 Pcs) Marui 39mm , B&P - $5,550

Omega - 3510.21 · $5,550
Up for sale is my Omega Speedmaster 3510.21, a limited edition watch with only 2,000 pieces produced. It measures 39mm and features an automatic movement.

  • Condition: Very good condition
  • Case size: 39mm diameter
  • Movement type: Automatic
Posted at
May 3, 2026, 8:39 PM
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2022 Omega Speedmaster Moonwatch Sapphire 42mm 310.30.42.50.01.002 Mint Complete

Omega - 310.30.42.50.01.002 · $6,195
This 2022 Omega Speedmaster Moonwatch Sapphire 42mm is a first watch worn on the moon, featuring photos and a video on the seller's website.

  • Condition: Minty fresh
  • Case size: 42mm
  • Year: 2022
  • Contents: watch,inner & outer boxes,warranty card,pictogram,master chronometer,instruction booklet,black travel case,hang tag,cleaning cloth,Moonwatch Booklet
Posted at
Apr 7, 2025, 2:59 PM
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Omega Speedmaster Chronograph - Blue - Stainless Steel - 38mm - Mint

Omega Speedmaster Chronograph - Blue - Stainless Steel - 38mm - Mint

Omega - 324.30.38.50.03.002 · $3,695
This Omega Speedmaster Chronograph features a 38mm stainless steel case, blue dial, and automatic movement.

  • Condition: Pre-Owned - Mint
  • Case size: 38mm diameter
  • Bracelet type: Stainless Steel
  • Dial color: Blue
Posted at
Apr 5, 2025, 6:13 PM
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