Omega Speedmaster Speedmaster Professional Moonphase Broad Arrow Stainless Steel / Silver / Strap
Reference 3875.30.31
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] 2022 Omega Speedmaster Racing 40mm 326.32.40.50.06.001 Full Set Excellent](https://external-preview.redd.it/hVNZLhh3WfbzbyrHTldHlFTAcXQyK4x2CTmRnigFXcA.jpeg?auto=webp&s=27eb97130ceb2bbc1cd1a70ca86275403873c42e)
2022 Omega Speedmaster Racing 40mm 326.32.40.50.06.001 Full Set Excellent
A sporty, modern Speedmaster with racing‑inspired detailing.
- Condition: Excellent
- Size: 40mm diameter
- Year: 2022
![[WTS] Omega Speedmaster Reduced 39mm - 3510.50](https://preview.redd.it/e8mequu63yzg1.jpg?width=640&crop=smart&auto=webp&s=365840273688c83f6144b7df653285e5c33fbfc6)
Omega Speedmaster Reduced 39mm - 3510.50
A Omega Speedmaster Reduced in 39mm size, running strong with a small issue with the chronograph function.
- Condition: pre-owned, good condition
- Size: 39mm diameter
- Wrist size: not specified
![[WTS] Omega Speedmaster Day Date 3523.80](https://preview.redd.it/w7wpxmpy0yzg1.jpg?width=640&crop=smart&auto=webp&s=0624206aff4b6a4d22a923ee1e0ef2474d7fdacc)
Omega Speedmaster Day Date 3523.80
This Omega Speedmaster Day Date features a beautiful blue dial and is in excellent condition.
- Condition: Excellent
- Payment Methods Accepted: Cryptocurrency and other methods (except PayPal)
- Location: Southwest FL
- Local Meeting Available: Yes
![[WTS] Omega Speedmaster Date 3511.50](https://preview.redd.it/htju0vwevxzg1.jpg?width=640&crop=smart&auto=webp&s=3759a62af27a8e9cce27492da4193a969d22a359)
Omega Speedmaster Date 3511.50
This Omega Speedmaster date is a rare reverse panda dial model only sold in Japan.
- Condition: great condition
- Location: southwest FL
- Payment Methods Accepted: crypto with small fee, local meetups
- Payment Methods Not Accepted: PayPal
![[WTS] “May the 4th Be With You” 2026 Card Omega Speedmaster Sapphire Complete Set *$7,200 + label*](https://preview.redd.it/x8icrclmlxzg1.jpg?width=640&crop=smart&auto=webp&s=657f83a806ba23d0aaabff15f208e06a5ceed220)
“May the 4th Be With You” 2026 Card Omega Speedmaster Sapphire Complete Set *$7,200 + label*
A brand new Omega Speedmaster Sapphire Sandwich Complete Set with all cards included, travel case, and literature.
- Condition: Brand new, unworn and unsized
- Year: 5/4/2026
- Contents: All cards included, travel case and Speedmaster literature
- Payment methods: Zelle or Wire preferred, Credit Cards accepted +3.5%
![[WTS] 2026 Omega Speedmaster White Full Set](https://preview.redd.it/52z1wg2v8xzg1.jpeg?auto=webp&s=ed1215e4cd73a06b27cb0bea2cbad7a84db2f4d7)
2026 Omega Speedmaster White Full Set
No description provided in the listing
![[WTS][US] Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - 311.30.40.30.01.001 - Full Set](https://preview.redd.it/k8nhgcz2mwzg1.jpg?width=640&crop=smart&auto=webp&s=79c56515e65c8c224f4fb5fd956029bf2ba4cde8)
[US] Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - 311.30.40.30.01.001 - Full Set
Up for sale is an Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm, functions perfectly mechanically.
- Condition: pristine condition with minor hairlines on clasp, case, and bracelet
- Diameter: 39.7mm
![[WTS] Omega Speedmaster Hesilate Ref. 310.32.42.50.01.001 Full Set + Original Receipt](https://preview.redd.it/638in08elwzg1.jpg?width=640&crop=smart&auto=webp&s=df96571ac990f1b9da976dc1dee0711629aa9b66)
Omega Speedmaster Hesilate Ref. 310.32.42.50.01.001 Full Set + Original Receipt
This Omega Speedmaster Moonwatch Professional features a Co-Axial Master Chronometer Caliber 3861 and is in excellent overall condition, with the notable exception of a very minor mark on the Hesalite crystal.
- Condition: Excellent overall condition with minor mark on Hesalite crystal and light signs of normal wear on case
- Movement: Co-Axial Master Chronometer Caliber 3861
- Crystal type: Hesalite
- Caseback type: Aftermarket exhibition caseback (original solid also included)
![[WTS][US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set](https://preview.redd.it/tjzoj633lwzg1.jpg?width=640&crop=smart&auto=webp&s=2da259a57fd5686cab7043ac0dd49cd3d252b322)
[US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set
Up for sale is an Omega Speedmaster Moonwatch Professional - White Dial - Full Set Watch is in pristine condition and functions perfectly mechanically, without issue.
- Condition: pristine condition with minor hairlines on clasp, case, and bracelet
- Water Resistance: 30m
- Box Contents: inner box, outer box, removable travel case, historical booklet, user manual, microfiber cloth, master chronometer card, warranty card