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

Current Listings

[US] Omega Speedmaster Broad Arrow - White Dial - 42mm - 3551.20.00 - Full Set

Omega - 3551.20.00 · $4,200

This Omega Speedmaster Broad Arrow features a white dial and 42mm case, with mechanical functionality.

Condition: Excellent (minor hairlines)
Case size: 42mm

Posted at

Dec 15, 2025, 8:27 AM

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OMEGA Speedmaster Calibre 321 "Ed White" Ref. 311.30.40.30.01.001 - ULTIMATE SET!

OMEGA - 311.30.40.30.01.001 · $18,000

The OMEGA Speedmaster Calibre 321 Ref. 311.30.40.30.01.001 is a faithful recreation of the reference 105.003, famously worn by astronaut Ed White during America's first spacewalk. This stainless steel timepiece features the iconic straight lugs and removal of crown guards that defined the early pre-Moon Speedmasters.

Condition: UNWORN
Size: 39.7mm
Movement: Calibre 321 column-wheel chronograph movement
Bezel material: black ceramic

Posted at

Dec 15, 2025, 12:00 AM

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OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET!

OMEGA - 311.92.44.30.01.001 · $10,000

The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 is a 44.25mm black ceramic watch that commemorates the 50th anniversary of the Apollo 8 mission, featuring a skeletonized dial and laser-ablated details to represent the lunar surface.

Condition: [UNWORN]
Case material: black ceramic
Diameter: 44.25mm
Movement: Calibre 1869

Posted at

Dec 14, 2025, 11:54 PM

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Omega Speedmaster Moonphase Ref. 304.33.44.52.01.001 (2024) - Pre-Owned Very Good Condition w/ Box & Papers

Omega - 304.33.44.52.01.001 · $7,495

This is a stunning example of the iconic black-dial Moonphase Speedmaster with legendary METAS-certified Calibre 9904, photo-realistic moonphase discs, blue liquidmetal tachymeter bezel, and transparent caseback.

Condition: Pre-Owned very good condition
Case Diameter: 44.25mm
Movement: Automatic, Calibre 9904
Water Resistance: 10 ATM

Posted at

Dec 14, 2025, 10:29 PM

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Omega Speedmaster Spiralwinder Ceramic Bezel for 3861

Omega - 3861 · $150

This is a Speedmaster Spiralwinder ceramic bezel insert designed for the 3861 Speedmaster Professional cases. It features a deep black ceramic with crisp white numerals and a DON90 tachymeter layout.

Compatible Reference: 3861
Bezel Material: ceramic
Tachymeter Layout: DON90 (Dot Over 90)

Posted at

Dec 14, 2025, 10:14 PM

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Omega Omega Speedmaster 38 Co-axial Chronograph Ref. 324.32.38.50.02.001 (2024) - Pre-Owned Very Good Condition w/ Box & Papers

Omega - 324.32.38.50.02.001 · $3,750

This Omega Speedmaster 38 Coaxial Chronograph features an elegant silver dial, chronograph functionality, and automatic movement in a stainless steel case with 10 ATM water resistance and 38mm diameter.

Condition: Pre-Owned very good condition
Case material: stainless steel
Diameter: 38mm
Movement: automatic Calibre 3330

Posted at

Dec 14, 2025, 10:07 PM

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Omega Speedmaster Professional Moonwatch Tropical Brown Dial Heavy Patina Blue Insert 1969 (Box/Serviced) 🟤

Omega - 145.022-69 · $15,150

This rare and fully original Omega Speedmaster Moonwatch features a stunning tropical brown dial with deep yellow patina across all indices and matching hands. The original blue bezel has aged attractively, taking on a rich blue tone that pairs perfectly with the tropical dial.

Condition: Very rare and fully original, beautiful condition
Size: 42mm diameter
Year: 1969
Case Back Type: flat case back

Posted at

Dec 14, 2025, 7:08 PM

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