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] Omega Speedmaster Grey Side of The Moon 311.93.44.51.99.002 Mint 2025](https://preview.redd.it/mspc0oqeokwg1.jpg?width=640&crop=smart&auto=webp&s=c407ec43e3d2f8ce32047878ed80b14f786b093a)
Omega Speedmaster Grey Side of The Moon 311.93.44.51.99.002 Mint 2025
This Omega Speedmaster Grey Side of The Moon is for sale in a very mint condition with no flaws and comes as a fully complete set.
- Condition: Mint condition
- Warranty Card Date: April 2025
- Shipping Method: WW insured shipping
![[WTS] Omega Speedmaster '57 - current gen - warranty till Apr 2027 (price reduced)](https://preview.redd.it/gw6sm84hpjwg1.jpg?width=640&crop=smart&auto=webp&s=559eb7851ad2f6251a22f5e033c5ec123b2c2312)
Omega Speedmaster '57 - current gen - warranty till Apr 2027 (price reduced)
Up for sale is my April 29, 2022 dated Omega Speedmaster '57, current generation, with warranty till Apr 2027.
- Condition: Pre-owned, very good condition with minor scratches and marks
- Dimensions: 40mm diameter
- Bracelet length: 17cm
![[WTS] Omega Speedmaster Professional Moonwatch ST 145.022-69 (1972)](https://preview.redd.it/s5urwb750hwg1.jpeg?auto=webp&s=61cd9082f7e81c37bb6e5bd2e53a14b26cea4179)
Omega Speedmaster Professional Moonwatch ST 145.022-69 (1972)
A 1972 Omega Speedmaster Professional Moonwatch with a manual wind Cal. 861 movement, 42mm stainless steel case, and black dial with three registers.
- Condition: some scratches on the bezel and crystal, some marks on the case
- Movement: Cal. 861
- Case size: 42mm diameter
- Water resistance: 30m depth rating
![[WTS]🐼NEW 2026 OMEGA SPEEDMASTER REVERSE PANDA](https://preview.redd.it/mfbuthnhsgwg1.jpg?width=640&crop=smart&auto=webp&s=bee3b31fe14adfd7f9fcb08f6e6536f8170a70a6)
🐼NEW 2026 OMEGA SPEEDMASTER REVERSE PANDA
No description provided.
- Condition: new
- Year: 2026
![[WTS] Omega Speedmaster Pro “Moon to Mars” Edition](https://preview.redd.it/csm49wkchgwg1.jpg?width=640&crop=smart&auto=webp&s=b579885fde04b7f5b72489dfefd8c2ef2d39066c)
Omega Speedmaster Pro “Moon to Mars” Edition
The Omega Speedmaster Pro 'Moon to Mars' Edition features a beautiful dial with subdials painted as Earth, Moon and Mars.
- Condition: Good, with a scratch on the crystal at 1 o'clock
- Bracelet size: 7 inches
- Movement: 1861 manual
- Size: 42mm diameter
![[WTS] Omega Speedmaster Moonwatch Professional 42mm 310.30.42.50.01.002 | 2025 Complete Set](https://preview.redd.it/qe2fhwefagwg1.jpg?width=640&crop=smart&auto=webp&s=ddbbe4c7cfc981882aaa83478ef868b16849e949)
Omega Speedmaster Moonwatch Professional 42mm 310.30.42.50.01.002 | 2025 Complete Set
The Omega Speedmaster Moonwatch Professional is a 42mm watch with an unknown service history.
- Condition: Great Pre-Owned
- Links: 24 Links
- Warranty Years Remaining: 1 year (2025)
![[WTS] Omega Speedmaster. Mother of pearl dial. 39mm. Automatic.](https://preview.redd.it/xfxueay7lfwg1.jpeg?auto=webp&s=bbe5504c73a75b221d28ac2cc76ee1b5acd4424d)
Omega Speedmaster. Mother of pearl dial. 39mm. Automatic.
A 39mm automatic Omega Speedmaster with a mother of pearl dial and OEM omega strap.
- Case size: 39mm
- Movement type: Automatic
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Omega Speedmaster Hesalite (ref. 3103042500100)
A recently serviced Omega Speedmaster Professional Moonwatch with a newer 3861 movement, featuring Hesalite crystal. The watch comes with full set, including warranty card, pictograms, master chronometer certification, and extra links.
- Condition: Very good, some small marks on the case and desk diving marks on the clasp
- Movement: 3861, newer
- Set included: full set, warranty card dated January 2021, pictograms, master chronometer certification, extra links
![[WTS][US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW](https://preview.redd.it/rp3kcz7rbfwg1.jpg?width=640&crop=smart&auto=webp&s=65504b9a11c8bf3447e1c155fb69133115d8339b)
[US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW
This Omega Speedmaster Moonwatch Professional is a 42mm Reverse Panda model available as a full set, complete with all original accessories.
- Condition: Brand new, unworn, and in pristine condition
- Case Size: 42mm
- Set Contents: Watch,Box (inner & outer),Travel case,Historical booklet,User manual,Microfiber cloth,Master chronometer card,Warranty card