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 Professional Moonwatch 3570.50 with leather and stainless steel Omega bracelets - $3,950 Shipped

Omega Speedmaster Professional Moonwatch 3570.50 with leather and stainless steel Omega bracelets - $3,950 Shipped

Omega - 3570.50 · $3,950
This is a re-listing of my Omega Speedmaster Professional Moonwatch, manufactured in 1992. The watch comes with the original steel bracelet, an adjustable leather bracelet, and a stainless steel buckle.

  • Condition: Excellent
  • Bracelet types: steel (original), leather (adjustable) with stainless steel buckle
  • Wrist size compatibility: 7.5 inches
Posted at
Dec 8, 2025, 2:31 PM
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[WTS][US] Omega Speedmaster Broad Arrow - White Dial - 42mm - 3551.20.00 - Full Set

[US] Omega Speedmaster Broad Arrow - White Dial - 42mm - 3551.20.00 - Full Set

Omega - 3551.20.00 · $4,225
This Omega Speedmaster Broad Arrow is a 42mm watch in excellent mechanical condition, featuring a white dial.

  • Condition: Fantastic condition with minor hairlines
  • Case size: 42mm diameter
Posted at
Dec 8, 2025, 2:21 PM
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[WTS] Omega Speedmaster Professional Hesalite - ref 310.30.42.50.01.001 - $5500 + label

Omega Speedmaster Professional Hesalite - ref 310.30.42.50.01.001 - $5500 + label

Omega - 310.30.42.50.01.001 · $5,500
Omega Speedmaster Professional Hesalite with ref number 310.30.42.50.01.001 for sale.

  • Case size: 41mm
Posted at
Dec 8, 2025, 2:02 PM
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[WTS] 2024 Omega Speedmaster Professional “Sapphire Sandwich” – Full Set

2024 Omega Speedmaster Professional “Sapphire Sandwich” – Full Set

Omega - 310.30.42.50.01.002 · $7,250
2024 Omega Speedmaster Professional Moonwatch “Sapphire Sandwich” with 42mm stainless steel case, sapphire front and exhibition caseback, black step dial, and manual winding Caliber 3861 Master Chronometer movement.

  • Condition: Excellent (9.5/10)
  • Case Size: 42mm diameter
  • Bracelet Condition: pristine, zero desk wear
Posted at
Dec 8, 2025, 12:44 PM
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[WTS] Omega Speedmaster Silver Snoopy Award 310.32.42.50.02.001 w/ Bracelet x Full Set

Omega Speedmaster Silver Snoopy Award 310.32.42.50.02.001 w/ Bracelet x Full Set

Omega - 310.32.42.50.02.001 · $15,000
A 2023 Omega Speedmaster Silver Snoopy Award watch, part of the 50th Anniversary collection, featuring a complete set including bracelet and canvas bands.

  • Condition: Preowned with light wear (hairline scratches)
  • Bracelet Type: Fully linked
  • Canvas Band: yes
Posted at
Dec 8, 2025, 10:28 AM
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[WTS] Omega Speedmaster Professional Moonwatch Tropical Brown Dial Heavy Patina Blue Insert 1969 (Serviced) 🟤

Omega Speedmaster Professional Moonwatch Tropical Brown Dial Heavy Patina Blue Insert 1969 (Serviced) 🟤

Omega - 145.022-69 · $15,150
Very rare and fully original Omega Speedmaster Moonwatch 145.022-69 in beautiful condition, featuring a deep, even transformation with heavy yellow patina across all indices and matching hands.

  • Case Size: 42mm
  • Year Made: 1969
  • Movement Status: serviced in November 2025
Posted at
Dec 7, 2025, 6:21 PM
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[WTS] Omega Speedmaster. 39mm. Triple Date. Clean.

Omega Speedmaster. 39mm. Triple Date. Clean.

Omega - Speedmaster (no specific reference number given) · $1,875
This Omega Speedmaster is a 39mm triple date model with clean condition.

  • Condition: Clean
  • Case Size: 39mm
  • Location: NJ USA
Posted at
Dec 7, 2025, 3:59 PM
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[WTS] 2021 Omega Speedmaster Professional

2021 Omega Speedmaster Professional

Omega - 310.30.42.50.01.002 · $6,000
A 2021 Omega Speedmaster Professional "Sapphire Sandwich" with a 42mm case size and manual winding movement.

  • Condition: Pre Owned/New: 9/10, Cosmetic Condition: Excellent
  • Movement: OMG Calibre 3861 (manual winding)
  • Power reserve: approximately 50 hours
  • Water resistance: 50 meters (165 feet)
Posted at
Dec 6, 2025, 7:29 PM
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[WTS] Omega Speedmaster 1957 / Broad Arrow Automatic Chrono 42mm Black Gloss Dial - Cal. 3313 High Horology Co Axial Column Wheel - Full Kit 09/2012 - $4,250 shipped CONUS

Omega Speedmaster 1957 / Broad Arrow Automatic Chrono 42mm Black Gloss Dial - Cal. 3313 High Horology Co Axial Column Wheel - Full Kit 09/2012 - $4,250 shipped CONUS

Omega - 1957 / Broad Arrow Automatic Chrono 42mm · $4,250
This Omega Speedmaster 1957 Broad Arrow chronograph is a full kit with warranty card dated September 2012. It features a high horology Frederic Piguet based movement with a column wheel and Co Axial escapement.

  • Condition: Excellent (minor wear on bezel and bracelet)
  • Movement: Omega Caliber 3313 (Frederic Piguet based) with Co Axial escapement and column wheel
Posted at
Dec 6, 2025, 3:49 PM
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