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
Omega Speedmaster Dark Side of the Moon "Apollo 8" 44.25MM 311.92.44.30.01.001
The Omega Speedmaster Dark Side of the Moon features a super lightweight ceramic case, an insane skeleton dial with a laser-etched lunar surface, and a hand-wound 1869 movement.
- Condition: Excellent Condition
- Case material: ceramic
- Dial type: skeleton
- Movement type: hand-wound

2022 Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 Sapphire
A 2022 Omega Speedmaster Professional Moonwatch in like new condition, described by the seller as worse than it really is.
- Condition: Like new
- Material: Sapphire crystal


BNIB Omega SPEEDMASTER SILVER SNOOPY AWARD 50TH ANNIVERSARY 2025 FULL SET
A 2025 Omega Speedmaster Professional Moonwatch, specifically the Silver Snoopy Award edition, featuring a 42mm stainless steel case and silver dial with blue subdials. This watch is part of the 50th Anniversary celebration and comes with a full set of accessories and documentation.
- Condition: Brand New in Box (BNIB)
- Case Size: 42mm
- Movement:
- Water Resistance:

Omega Speedmaster Moonwatch White Dial 310.30.42.50.04.001
Up for sale is the Omega Speedmaster Moonwatch White Dial, a beautiful watch under factory warranty until August 2029.
- Condition: Mint condition with minor signs of wear
- Warranty Start Date: August 2024
- Msrp: 8100
- Comes With: Outer Box, Inner Speedmaster Box, Operating Instructions, Moonwatch Booklet, Pictograms Card, Master Chronometer Card, International Warranty Card

Omega Speedmaster Moonwatch Sapphire Sandwich-310.30.42.50.01.002
A direct descendant of the watch worn on the Moon, this Omega Speedmaster Moonwatch features a classic asymmetrical 42mm stainless steel case and black stepped dial, powered by a hand-wound Co-Axial Master Chronometer 3861 movement.
- Condition: EXCELLENT, very light signs of use
- Case Size: 42mm diameter
- Material: stainless steel
- Bezel: black aluminum with tachymeter scale

Omega Speedmaster �Dark Side of the Moon� 311.92.44.51.01.007
A bold reimagining of the iconic Moonwatch, crafted from a single block of black ceramic with a stunning black zirconium oxide dial and Co-Axial Master Chronometer movement.
- Condition: EXCELLENT - Very light signs of wear, if any
- Case Size: 44.25mm diameter
- Material: Black Ceramic
- Bezel: Black Ceramic with Tachymeter Scale

Omega SPEEDMASTER MOONPHASE 18K YELLOW GOLD STEEL GREEN BEZEL GREY DIAL 2024
This Omega Speedmaster Moonwatch features a 18K yellow gold and stainless steel case with a green ceramic bezel and grey dial.
- Condition: Excellent, unpolished condition
- Case size: 44.25mm diameter
- Movement: Omega Co-Axial Master Chronometer 9904 chronograph movement
- Warranty: under 5 years factory warranty remaining
Omega Speedmaster Reduced "Marui" - 3510.21 - White - Steel - 39mm
A vintage Omega Speedmaster Reduced 'Marui' watch in excellent condition, featuring a white dial and stainless steel case.
- Condition: Pre-Owned, Excellent Grade
- Case Size: 39mm diameter
- Material: Stainless Steel
- Dial Color: White