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.
Buy Now on Jomashop
This is an affiliate link

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 Racing 326.30.40.50.03.001

Omega Speedmaster Racing 326.30.40.50.03.001

Omega - 326.30.40.50.03.001 · $2,350
This Omega Speedmaster Racing is available for sale in excellent working order, and its condition allows it to be barely noticeable despite having some slight wear.

  • Condition: great condition with some light wear
Posted at
May 1, 2026, 11:04 AM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Day Date 3523.80

Omega Speedmaster Day Date 3523.80

Omega - 3523.80 · $2,275
For sale is an Omega Speedmaster Day Date with a beautiful blue dial, it's in excellent condition and running solid.

  • Condition: Excellent condition
Posted at
May 1, 2026, 11:02 AM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Date 3211.31 COMPLETE SET + OEM BRACELET

Omega Speedmaster Date 3211.31 COMPLETE SET + OEM BRACELET

Omega - 3211.31 · $2,650
For sale is an Omega Speedmaster Date 3211.31 in amazing condition with hardly any wear on it, coming with the complete set including warranty card and original speedmaster bracelet.

  • Condition: amazing condition with hardly any wear
  • Bracelet Condition: great condition
  • Includes: warranty card
  • Has Original Bracelet: yes
Posted at
May 1, 2026, 10:54 AM
Active
View listing on r/WatchExchange
[WTS][US] Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - 311.30.40.30.01.001 - Full Set

[US] Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - 311.30.40.30.01.001 - Full Set

Omega - 311.30.40.30.01.001 · $15,600
A black dial Omega Speedmaster Calibre 321 in 39.7mm is up for sale with a full set of accessories.

  • Condition: pristine condition
  • Case Size: 39.7mm diameter
Posted at
May 1, 2026, 7:41 AM
Active
View listing on r/WatchExchange
[WTS][US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set

[US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set

Omega - 310.30.42.50.04.001 · $7,950
Up for sale is an Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001, in fantastic condition with minor hairlines on the clasp, case, and bracelet.

  • Condition: pristine with minor hairlines on clasp, case, and bracelet
  • Case size: 42mm diameter
Posted at
May 1, 2026, 7:36 AM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Professional (310.30.42.50.01.002)

Omega Speedmaster Professional (310.30.42.50.01.002)

Omega - 310.30.42.50.01.002 · $6,800
This Omega Speedmaster Professional features a black dial, sapphire crystal on a steel bracelet and is powered by manual caliber 3861.

  • Condition: Excellent
  • Case size: 42mm
  • Material: Stainless Steel
  • Crystal type: Sapphire
Posted at
May 1, 2026, 7:28 AM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Professional “Reverse Panda” | 310.30.42.50.01.004 | 2026 BNIB

Omega Speedmaster Professional “Reverse Panda” | 310.30.42.50.01.004 | 2026 BNIB

Omega - 310.30.42.50.01.004 · $10,500
A stunning Omega Speedmaster Professional known as the "Reverse Panda", this rare model is hard to find and comes with its full set of packaging.

  • Condition: Brand new in box (BNIB)
  • Year: 2026
  • Set included: full set, box, and papers
Posted at
Apr 30, 2026, 10:39 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Triple Calendar Day-Date Ref.3221.30.00 40mm | Great Condition (With Box & Serviced) | $2250

Omega Speedmaster Triple Calendar Day-Date Ref.3221.30.00 40mm | Great Condition (With Box & Serviced) | $2250

Omega - 3221.30.00 · $2,250
This Omega Speedmaster Triple Calendar Day-Date features a stainless steel case with a thickness of around 15mm and is paired with a sapphire crystal and rated to 100m water resistance. The dial includes chronograph registers, day, date, and month displays, as well as a 24-hour/GMT indication. It's powered by the Caliber 3606 movement.

  • Condition: Great
  • Water resistance: 100m
  • Movement power reserve: 44 hours
  • Bracelet size range: 18.5-19cm (7.2-7.5 inches)
Posted at
Apr 30, 2026, 10:22 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Professional Moonwatch – Ref. 310.30.42.50.01.001 – Excellent Condition – 2022

Omega Speedmaster Professional Moonwatch – Ref. 310.30.42.50.01.001 – Excellent Condition – 2022

Omega - 310.30.42.50.01.001 · $5,450
The Omega Speedmaster Professional Moonwatch is a modern iteration of the legendary Moonwatch with updated movement technology and finishing while staying true to its heritage. It features an iconic Hesalite crystal and manual-wind Master Chronometer movement 3861. The watch is in excellent condition, showing only extremely light signs of wear.

  • Condition: excellent, minimal hairline scratches
  • Case size: 42mm
  • Movement: Cal. 3861 manual-wind Co-Axial Master Chronometer
  • Crystal: Hesalite
Posted at
Apr 30, 2026, 8:58 PM
Active
View listing on r/WatchExchange