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] 2024 OMEGA SPEEDMASTER PROFESSIONAL- WHITE DIAL - FULL KIT - $7,800

2024 OMEGA SPEEDMASTER PROFESSIONAL- WHITE DIAL - FULL KIT - $7,800

Omega - 310.30.42.50.04.001 · $7,800
The 2024 White Dial Omega Speedmaster Professional features a glossy, lacquered white stepped dial with applied blackened markers and hands. It is powered by the METAS-certified Master Chronometer Calibre 3861 and viewed through a sapphire exhibition caseback.

  • Condition: Great condition/minor desk diving
  • Movement: Manual-winding Calibre 3861 (Anti-magnetic to 15,000 gauss)
  • Dial size: 42mm
  • Water resistance: unknown
Posted at
Mar 10, 2026, 9:38 PM
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[WTS] Omega Speedmaster Moonwatch 310.30.42.50.01.002 - Legendary Timepiece

Omega Speedmaster Moonwatch 310.30.42.50.01.002 - Legendary Timepiece

Omega - 310.30.42.50.01.002 · $6,900
The Omega Speedmaster Professional Moonwatch, reference 310.30.42.50.01.002, is an iconic timepiece that combines precision with timeless design. Featuring a robust stainless steel case and a classic black dial, it's not just a watch—it's a piece of history.

  • Condition: Good
  • Case material: stainless steel
  • Dial color: black
Posted at
Mar 10, 2026, 5:32 PM
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[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 · $5,850
A Omega Speedmaster Racing Chronograph in the model 329.30.44.51.01.001 features a 44.25mm size and has all functions working as expected.

  • Condition: pre-owned with minor wear
  • Size: 44.25mm diameter
  • Bracelet material: stainless steel
Posted at
Mar 10, 2026, 4:54 PM
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[WTS] Omega Speedmaster First Omega In Space (FOIS)

Omega Speedmaster First Omega In Space (FOIS)

Omega - 311.32.40.30.01.001 · $4,250
This Omega Speedmaster "First Omega in Space" features a size of 39.7mm and comes with multiple straps.

  • Case Size: 39.7mm
  • Strap Count: 6
  • Includes: Omega boxes,pictogram card,operating instructions booklet
Posted at
Mar 10, 2026, 1:14 PM
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[WTS] Omega Speedmaster Reduced 3510.50 Mint Full Set $3250

Omega Speedmaster Reduced 3510.50 Mint Full Set $3250

Omega - 3510.50 · $3,250
A beautiful Omega Speedmaster Reduced from 1998, featuring a matte black dial with white inscriptions and a stainless steel case measuring 39mm.

  • Condition: Mint
  • Case size: 39mm diameter
  • Movement: Automatic Omega caliber 3220 (ETA 2890-2 with Dubois-Depraz chronograph module)
  • Bracelet type: Omega 1469
Posted at
Mar 10, 2026, 9:03 AM
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[WTS] Omega Speedmaster 3520.53 - $2,690

Omega Speedmaster 3520.53 - $2,690

Omega - 3520.53 · $2,690
Up for sale is my great condition Omega Speedmaster 3520.53, which measures 39mm and has an automatic movement.

  • Condition: great condition with minor usage marks and patina
  • Case size: 39mm diameter
  • Movement type: automatic
  • Bracelet type: original Omega Steel speedmaster bracelet
Posted at
Mar 9, 2026, 10:04 PM
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[WTS] Omega Speedmaster Moonwatch Professional White Dial 310.30.42.50.04.001 - Full Set - 2025 - Excellent Condition

Omega Speedmaster Moonwatch Professional White Dial 310.30.42.50.04.001 - Full Set - 2025 - Excellent Condition

Omega - 310.30.42.50.04.001 · $8,150
2025 Omega Speedmaster Professional Moonwatch with a white dial, excellent condition, and minimal superficial wear.

  • Condition: Excellent pre-owned
  • Case material: Stainless steel
  • Case diameter: 42mm
  • Movement type: Manual-winding
Posted at
Mar 9, 2026, 7:51 PM
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[WTS] Omega Speedmaster Professional Moonwatch

Omega Speedmaster Professional Moonwatch

Omega - Speedmaster Professional Moonwatch · $5,900
A brand new Omega Speedmaster Professional Moonwatch with the caliber 1816, purchased at a local AD and barely worn.

  • Condition: Great condition
  • Caliber: 1816
  • Purchase Year: 2021-2022
Posted at
Mar 9, 2026, 7:08 PM
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[WTS] Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.02.001

Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.02.001

Omega - 324.30.38.50.02.001 · $3,500
This Omega Speedmaster 38 Co-Axial Chronograph features a silver dial and comes with various accessories, including the original bracelet and inner box.

  • Condition: Excellent overall condition, very minimal wear
  • Case material: Stainless steel
  • Bracelet type: Original Omega stainless steel bracelet
  • Additional straps: Brown leather strap
Posted at
Mar 9, 2026, 4:41 PM
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