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 3861 Panda 310.30.42.50.01.004 ( new / 2026 / box and papers )

Omega Speedmaster Moonwatch 3861 Panda 310.30.42.50.01.004 ( new / 2026 / box and papers )

Omega - 310.30.42.50.01.004 · $10,795
This Omega Speedmaster Moonwatch Professional features a stainless steel case and a sapphire crystal. It comes with an adjustable clasp and is complete with all boxes, papers, booklet, hang tag, and Omega Warranty Card.

  • Condition: Brand new
  • Case size: 42mm diameter
  • Movement: Omega Master Chronometer Movement 3861
  • Shipping cost international: $150
Posted at
May 21, 2026, 12:36 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Alaska Project 2008, $22k

Omega Speedmaster Alaska Project 2008, $22k

Omega - Speedmaster Alaska Project 2008 · $22,000
This Omega Speedmaster Alaska Project 2008 is being sold with its original box, warranty, and manuals. It was mostly worn on a NATO strap, leaving the bracelet largely unworn.

  • Condition: Preowned
  • Shipping: free for USA, additional cost for bulkier/heavier boxes
  • Payment methods: Wire or Credit Card (+4.9% & 4 days clearance)
  • Condition of bracelet: largely unworn
Posted at
May 21, 2026, 11:07 AM
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[WTS] Omega Speedmaster Triple Date Blue Sunburst Dial Ref. 3523.80.00 | $2,299 Shipped

Omega Speedmaster Triple Date Blue Sunburst Dial Ref. 3523.80.00 | $2,299 Shipped

This Omega Speedmaster Triple Date features a deep sunburst blue dial, steel tachymeter bezel, and full triple-calendar layout.

Posted at
May 21, 2026, 11:05 AM
Active
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[WTS] Omega Speedmaster Date Chronometer 3212.80.00 Blue Dial | Full Set, Fresh Service | $2,599 Shipped

Omega Speedmaster Date Chronometer 3212.80.00 Blue Dial | Full Set, Fresh Service | $2,599 Shipped

Omega - 3212.80.00 · $2,599
A Speedmaster Date Chronometer with a blue dial, this listing mentions it is full set and has been recently serviced.

  • Dial color: blue
  • Service status: fresh service
Posted at
May 21, 2026, 10:37 AM
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[WTS] OMEGA Speedmaster Date 40mm 18k Bezel Full Kit

OMEGA Speedmaster Date 40mm 18k Bezel Full Kit

OMEGA - 323.21.40.40.02.001 · $3,400
Omega Speedmaster Date in good condition, 40mm steel/yellow gold case.

  • Condition: good
  • Material: steel/yellow gold
  • Case diameter: 40mm
Posted at
May 21, 2026, 10:34 AM
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[WTS] Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 Sapphire Sandwitch

Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 Sapphire Sandwitch

Omega - 310.30.42.50.01.002 · $6,400
The Omega Speedmaster Professional Moonwatch, also known as the Sapphire Sandwich, features a timeless black dial and is powered by the updated Omega Caliber 3861 Master Chronometer movement.

  • Condition: Excellent pre-owned condition
  • Case size: 42mm diameter
  • Dial color: black
  • Crystal type: sapphire (front & exhibition caseback)
Posted at
May 21, 2026, 2:09 AM
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[WTS] Omega Speedmaster Racing White Dial 329.33.44.51.04.001 Co-Axial Master Chronometer Full Set $7495

Omega Speedmaster Racing White Dial 329.33.44.51.04.001 Co-Axial Master Chronometer Full Set $7495

Omega - 329.33.44.51.04.001 · $7,495
The Omega Speedmaster Racing Master Chronometer features a white 'racing dial' and is powered by the Caliber 9900 Co-Axial Master Chronometer movement.

  • Condition: Excellent, pre-owned with light wear consistent with careful use
  • Case diameter: 44.25mm
  • Depth rating: 50m
  • Movement: Omega Caliber 9900 (Master Chronometer certified)
Posted at
May 20, 2026, 7:16 PM
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[WTS] Omega Speedmaster Date (3513.30)

Omega Speedmaster Date (3513.30)

Omega - 3513.30 · $2,425
This Omega Speedmaster date features a silver dial on a steel bracelet, produced from 1998-2010.

  • Condition: excellent for its age
  • Case size: 39mm diameter
  • Case material: stainless steel
  • Bracelet material: stainless steel
Posted at
May 20, 2026, 7:04 AM
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[WTS] Omega Speedmaster Date 3211.30 40mm - $1,890

Omega Speedmaster Date 3211.30 40mm - $1,890

Omega - 3211.30 · $1,890
Up for sale is the Omega Speedmaster 3211.30 in great condition with an automatic movement, measuring 40mm in diameter. The watch has a steel bezel with some light marks/scratches/dents.

  • Condition: great condition for its age with minimal marks/hairlines
  • Case Size: 40mm diameter
  • Bracelet Length: fits up to 7-7.25 inch wrists
  • Movement: automatic Omega Calibre 1164
Posted at
May 19, 2026, 9:27 PM
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