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 Moonwatch White Dial 310.30.42.50.04.001 Full Set

2024 Omega Speedmaster Professional Moonwatch White Dial 310.30.42.50.04.001 Full Set

Omega - 310.30.42.50.04.001 · $6,600
The Omega Speedmaster Professional Moonwatch is a 2024 model with a white dial, featuring a stainless steel case and manual winding movement.

  • Condition: Light scratches on the case and bracelet
  • Case size: 42mm diameter
  • Movement type: Manual Wind
Posted at
Apr 30, 2026, 5:14 PM
Active
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[WTS] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Brand New

Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Brand New

Omega - 310.30.42.50.04.001 · $7,900
This is a Omega Speedmaster Moonwatch Professional with a white dial.

  • Condition: Brand New
  • Year of production: 2026
Posted at
Apr 30, 2026, 3:37 PM
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[WTS] 2021 Omega Speedmaster Racing 329.32.44.51.01.001 Orange Full Set - $6,495

2021 Omega Speedmaster Racing 329.32.44.51.01.001 Orange Full Set - $6,495

Omega - 329.32.44.51.01.001 · $6,495
2021 Omega Speedmaster Racing, a racing themed version of the iconic Speedmaster watch, featuring an orange color scheme and various accessories.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2021
  • Case Size: 44mm
  • Contents: Watch,Inner & Outer Box,Card Holder,International Warranty Card,Pictograms Card,Master Chronometer Card,Instructions Manual
Posted at
Apr 30, 2026, 9:53 AM
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[WTS] 2025 Omega Speedmaster Sedna Gold 310.60.42.50.01.001 — Like New Condition, Box & Papers

2025 Omega Speedmaster Sedna Gold 310.60.42.50.01.001 — Like New Condition, Box & Papers

Omega - 310.60.42.50.01.001 · $29,500
The Omega Speedmaster Sedna Gold elevates the iconic Moonwatch design with Omega’s proprietary Sedna gold and features a rich black dial.

  • Condition: Like new condition, ding on bezel near 12 o'clock
  • Box And Papers: Yes, complete with original box and papers (wallet not included)
  • Movement: Master Chronometer manual-wind
  • Size: [object Object]
Posted at
Apr 30, 2026, 9:10 AM
Active
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[WTS][US] Omega Speedmaster Moonphase - Black Dial - 44mm - 304.30.44.52.01.001

[US] Omega Speedmaster Moonphase - Black Dial - 44mm - 304.30.44.52.01.001

Omega - 304.30.44.52.01.001 · $6,750
A pre-owned Omega Speedmaster Moonphase watch in excellent condition, featuring a black dial and 44mm case size.

  • Condition: Fantastic condition
  • Case size: 44mm
  • Bracelet condition: minor hairlines
Posted at
Apr 30, 2026, 8:28 AM
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[WTS] Omega Speedmaster Moonwatch 310.32.42.50.01.001 Full Set + Exhibition Caseback

Omega Speedmaster Moonwatch 310.32.42.50.01.001 Full Set + Exhibition Caseback

Omega - 310.32.42.50.01.001 · $5,170
This Omega Speedmaster Moonwatch Professional features the Co-Axial Master Chronometer Caliber 3861 and comes as a full set, including an aftermarket exhibition caseback.

  • Condition: Excellent overall condition with minor mark on Hesalite crystal
  • Crystal material: Hesalite
  • Caseback type: Exhibition (aftermarket) and solid (original)
  • Extras: Original purchase receipt from Omega
Posted at
Apr 29, 2026, 10:27 PM
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[WTS] Omega Speedmaster Moonwatch – White Dial (Ref. 310.30.42.50.04.001)

Omega Speedmaster Moonwatch – White Dial (Ref. 310.30.42.50.04.001)

Omega - 310.30.42.50.04.001 · $7,150
This Omega Speedmaster Moonwatch features a white dial and a 42mm stainless steel case.

  • Condition: worn a number of times with light signs
  • Case Size: 42mm diameter
  • Water Resistance: 50m water resistance
  • Movement Type: Manual wind Caliber 3861
Posted at
Apr 29, 2026, 9:32 PM
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[WTS] OMEGA Speedmaster Professional 3861 Sapphire Sandwich + Spiralwinder Ceramic Bezel Installed (original bezel included) - $5750 shipped CONUS

OMEGA Speedmaster Professional 3861 Sapphire Sandwich + Spiralwinder Ceramic Bezel Installed (original bezel included) - $5750 shipped CONUS

OMEGA - Speedmaster Professional 3861 Sapphire Sandwich · $5,750
This OMEGA Speedmaster Professional is a Sapphire Sandwich model, running at +0 seconds/day and with perfectly functioning chrono functions. It comes with an upgraded Spiralwinder ceramic bezel and a Forstner Bullet Bracelet with quick adjust clasp.

  • Condition: Very good condition
  • Bracelet: Forstner Bullet Bracelet
  • Bezel included: original OEM Omega bezel
  • Movement tech: latest movement technology
Posted at
Apr 29, 2026, 9:29 PM
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[WTS] Omega Speedmaster Date

Omega Speedmaster Date

Omega - 3212.80 · $1,999
A beautiful blue Omega Speedy Date in good condition, featuring a Cal 1164 movement and a 40mm size.

  • Condition: good condition with normal wear and scratches on the aluminum bezel
  • Movement: Cal 1164
  • Bracelet size fits: 7 inches
  • Case and bracelet wear: normal wear
Posted at
Apr 29, 2026, 8:27 PM
Active
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