Omega Speedmaster Speedmaster Professional Moonphase Broad Arrow Stainless Steel / Silver / Strap

Reference 3875.30.31

Omega Speedmaster Professional Moonphase Broad Arrow Stainless Steel / Silver / Strap

About this watch

The Omega Speedmaster Professional Moonphase Broad Arrow (model 3875.30.31) is a luxury watch that embodies precision, quality, and timeless design. This piece of history is part of the legendary 'Moonwatch' series, which was first worn on the moon during the Apollo missions. The 3875.30.31 model features the Omega caliber 1866 movement, a handwound chronograph movement that showcases exceptional engineering and precision. The watch's combination of white gold and stainless steel gives it a luxurious yet durable feel, while its sapphire glass provides scratch resistance for daily wearers. With a diameter of 42 mm and a lug width of 20 mm, this watch sits comfortably on the wrist, offering a classic look that complements both formal and casual attire. One of the standout features is its moonphase display at the 12 o'clock position, serving as a functional complication that appeals to enthusiasts who appreciate celestial aspects of watchmaking. The chronograph function allows for precise timing, making it practical and fun to use. The Omega Speedmaster Professional Moonphase is water-resistant up to 50 meters, suitable for everyday activities but not recommended for swimming or diving. This model comes with a sturdy strap that ensures a secure fit on the wrist, complementing its overall aesthetic and offering adjustability for different wrist sizes. At a reasonable weight, the 3875.30.31 feels substantial without being cumbersome, striking a perfect balance suitable for both all-day wear and special occasions.
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Key Features

  • Handwound chronograph movement (Caliber 1866)
  • Moonphase display at 12 o'clock position
  • Tachymeter bezel
  • Sapphire glass
  • Water-resistant up to 50 meters
  • Sturdy strap with adjustability
  • Reasonable weight and balance

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonphase Broad Arrow Stainless Steel / Silver / Strap
Reference
3875.30.31
Movement
1866
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph
  • Moonphase
Case
42mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster Moonwatch 3570.50 - $4450

Omega Speedmaster Moonwatch 3570.50 - $4450

Omega - 3570.50 · $4,450
A Omega Speedmaster Moonwatch 3570.50 for sale, featuring an original leather strap and wood box.

  • Condition: Like new, minor wear on bracelet and outer box
  • Bracelet condition: Normal wear
  • Box condition: Minor dent
Posted at
Apr 28, 2026, 12:08 PM
Active
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[WTS] Omega Speedmaster Sapphire New 2026, $7500

Omega Speedmaster Sapphire New 2026, $7500

Omega - 310.30.42.50.01.002 · $7,500
This listing is for a brand new Omega Speedmaster Sapphire, featuring a reference number of 310.30.42.50.01.002 and coming with its original box and warranty.

  • Condition: Brand New Condition
  • Shipping Cost: $150 for USA
  • Payment Methods: Wire or Credit Card (+4.9% & 4 days clearance)
  • Warranty Year: 2026
Posted at
Apr 28, 2026, 10:35 AM
Active
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[WTS] Omega Speedmaster Moonshine Green Dial 2023, $29k+✈️

Omega Speedmaster Moonshine Green Dial 2023, $29k+✈️

Omega - 310.60.42.50.10.001 · $29,000
2023 Omega Speedmaster Moonshine Green Dial, with a layer of aftermarket watch protection film on.

  • Condition: Preowned Condition
Posted at
Apr 28, 2026, 10:31 AM
Active
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[WTS][US] Omega Speedmaster First Omega in Space - FOiS - 310.30.40.50.06.001 - Full Set

[US] Omega Speedmaster First Omega in Space - FOiS - 310.30.40.50.06.001 - Full Set

Omega - 310.30.40.50.06.001 · $7,525
Up for sale is an Omega Speedmaster First Omega in Space - FOiS - Full Set, which functions perfectly mechanically without issue.

  • Condition: Fantastic with few hairlines
  • Case Condition: few hairlines on case, clasp, and bracelet
  • Box Status: Full Set
Posted at
Apr 28, 2026, 8:44 AM
Active
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[WTS] Omega Speedmaster Moonwatch (Reverse Panda) – Full Kit

Omega Speedmaster Moonwatch (Reverse Panda) – Full Kit

Omega - Speedmaster Moonwatch (Reverse Panda) · $10,250
A classic Omega Speedmaster Moonwatch with an updated Co-Axial Master Chronometer movement, available as a full set including box, papers, and cards.

  • Condition: Amazing, slight mark on the case
  • Size: 40mm diameter
  • Movement: Cal. 3861
  • Power reserve: ~50 hours
Posted at
Apr 28, 2026, 1:33 AM
Active
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[WTS] Omega Speedmaster Triple Calendar Blue Sunburst Dial 3523.80 39mm | Great Condition (Serviced) | $2500

Omega Speedmaster Triple Calendar Blue Sunburst Dial 3523.80 39mm | Great Condition (Serviced) | $2500

Omega - 3523.80 · $2,500
The Omega Speedmaster Triple Calendar is a compact watch with a blue sunburst dial featuring a tachymeter scale and multiple complications. The stainless steel case measures approximately 44.7mm lug-to-lug and has an 18mm lug width.

  • Condition: Great condition, recently serviced
  • Case Size: 39mm diameter
  • Lug Width: 18mm
  • Lug To Lug: 44.7mm
Posted at
Apr 27, 2026, 10:20 PM
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[WTS] Omega Speedmaster Pro White Dial

Omega Speedmaster Pro White Dial

Omega - 310.32.42.50.04.001 · $6,999
A beautiful Omega Speedmaster Pro with a white dial is up for sale, featuring a manual wind movement and coming as a full kit with card dated 09/2025.

  • Condition: great condition with minimal wear on the case
  • Size: 42mm diameter
  • Movement: 3861 manual wind movement
Posted at
Apr 27, 2026, 9:28 PM
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[WTS] Omega Speedmaster. Mother of pearl dial. 39mm. Automatic.

Omega Speedmaster. Mother of pearl dial. 39mm. Automatic.

Omega · $2,100
This Omega Speedmaster features a 39mm automatic movement and a beautiful mother of pearl dial, along with gorgeous lume and an OEM omega strap.

  • Case Size: 39mm diameter
  • Movement Type: Automatic
Posted at
Apr 27, 2026, 6:33 PM
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[WTS] 2025 Omega Speedmaster Silver Snoopy Award Full Set

2025 Omega Speedmaster Silver Snoopy Award Full Set

Omega - 310.32.42.50.02.001 · $15,499
The Omega Speedmaster Silver Snoopy Award 50th Anniversary is a highly sought-after model that celebrates the brand's historic relationship with NASA and commemorates the Silver Snoopy Award presented to Omega in 1970 for its contributions to the Apollo 13 mission.

  • Case size: 42mm
  • Movement: Manual Wind, Omega Caliber 3861 (Master Chronometer Certified)
  • Dial color: Silver with blue accents
Posted at
Apr 27, 2026, 4:08 PM
Active
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