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] BNIB Omega Speedmaster Professional 310.30.42.50.01.001 $6,799](https://preview.redd.it/mrmoyc6bn7xg1.jpg?width=640&crop=smart&auto=webp&s=43052481729ab9f1a6e3572f8bcba5cfcff80605)
BNIB Omega Speedmaster Professional 310.30.42.50.01.001 $6,799
The Omega Speedmaster Moonwatch Professional features a 42mm stainless steel case with a hesalite front and solid case back, powered by the updated caliber 3861 movement.
- Condition: Brand new in box with warranty
- Movement: Hand wound Cal 3861
- Power reserve: 50 hours
- Case size: 42mm diameter
![[WTS] Omega Speedmaster Racing with a box 40mm](https://preview.redd.it/vi9jrp5wb7xg1.jpg?width=640&crop=smart&auto=webp&s=e91fec5f953fe5df3ecd37f7ba61dc5864bb7efc)
Omega Speedmaster Racing with a box 40mm
- Box: included
![[WTS] Omega OEM Integrated Speedmaster Rubber Straps - One with OEM Clasp - One Without Clasp (Backordered thru Omega)](https://preview.redd.it/fxxaq044w6xg1.jpg?width=640&crop=smart&auto=webp&s=aa1accc3e36890b20a37d3656db713d36ae5a125)
Omega OEM Integrated Speedmaster Rubber Straps - One with OEM Clasp - One Without Clasp (Backordered thru Omega)
Additional details for Omega Speedmaster Professional rubber straps with curved ends and stainless steel deployant clasp. Designed to fit 20mm lugs.
- Condition: Very Good
- Material: rubber
- Clasp Type: stainless steel deployant clasp
- Lugs Size: 20mm
![[WTS] 2026 LNIB OMEGA Speedmaster Moonwatch Professional "Reverse Panda" 310.30.42.50.01.004 - Full Set](https://preview.redd.it/tq340bu5p6xg1.jpg?width=640&crop=smart&auto=webp&s=badbb717269a994c510cb666fd63a40ced105216)
2026 LNIB OMEGA Speedmaster Moonwatch Professional "Reverse Panda" 310.30.42.50.01.004 - Full Set
The Omega Speedmaster Moonwatch Professional 'Reverse Panda' is a new addition to the permanent Moonwatch collection, featuring a glossy polished black lacquered step dial with white varnished and lacquered sub-dials.
- Condition: Pristine pre-owned condition, virtually like new
- Case size: 42mm diameter
- Movement: Manual-Winding Co-Axial Master Chronometer Calibre 3861 (METAS certified)
- Power reserve: ~50 hours
![[WTS] Omega Speedmaster Day Date 3523.80](https://preview.redd.it/bcqryecka6xg1.jpg?width=640&crop=smart&auto=webp&s=3089ffabc225adabbe7aa2434e49e5a747c8369c)
Omega Speedmaster Day Date 3523.80
This Omega Speedmaster Day Date features a beautiful blue dial and is in excellent condition with minimal signs of wear.
- Condition: Excellent
- Payment Methods Accepted: pretty much every payment method, including crypto
- Meetup Location: southwest FL
- Available Trades: Tudor, Cartier, Rolex, Omega, Breitling, AP
![[WTS] Omega Speedmaster Racing 326.30.40.50.03.001](https://preview.redd.it/j259226j96xg1.jpg?width=640&crop=smart&auto=webp&s=6444ced954001ce2d03290d1142573e20020737d)
Omega Speedmaster Racing 326.30.40.50.03.001
For sale is an Omega Speedmaster Racing, in great condition with some light wear around the watch.
- Condition: great condition with some light wear
- Payment Methods Accepted: pretty much every payment method including crypto
- Local Meet Available: yes
![[WTS] Omega Speedmaster Date 38.5mm 3513.54](https://preview.redd.it/o6sgrlko86xg1.jpg?width=640&crop=smart&auto=webp&s=9e3529ac8402405f5bb64f009b62462320b2a6d1)
Omega Speedmaster Date 38.5mm 3513.54
For sale is an Omega Speedmaster Date 38.5mm reference number 3513.54, in good condition, from 1998.
- Condition: good with some wear and small marks
- Year of production: 1998
- Case size: 38.5mm
![[WTS] Omega Speedmaster Reduced 3510.50](https://preview.redd.it/lnykkhpx56xg1.jpg?width=640&crop=smart&auto=webp&s=aa5e42a65deb97ee6a9eef0da9505d91a9065bed)
Omega Speedmaster Reduced 3510.50
For sale is an Omega Speedmaster Reduced 3510.50 in great condition, with some minor wear and fading on the bezel.
- Condition: Great condition with some light wear and fading on the bezel
- Payment Methods Accepted: Various payment methods including crypto with a small fee, excluding PayPal
- Local Pickup Available: Yes, located in southwest FL
- Trading Possible: Yes, only with brands Tudor, Cartier, Rolex, Omega, Breitling, AP
![[WTS] 2026 Omega Speedmaster Professional White Dial 310.32.42.50.04.002 Full Set $7,300](https://preview.redd.it/krybhbjl36xg1.jpg?width=640&crop=smart&auto=webp&s=b0e3fc157b8e34264357a60661bf42b3116f2829)
2026 Omega Speedmaster Professional White Dial 310.32.42.50.04.002 Full Set $7,300
A modern Omega Speedmaster Professional with a lacquered white dial, powered by the Co-Axial Master Chronometer Calibre 3861, featuring a clean and high-contrast look while maintaining the iconic Speedmaster design.
- Condition: Like new
- Case size: 42mm diameter
- Case material: Stainless steel
- Movement: Manual wind (Omega Calibre 3861 Master Chronometer)