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

Omega Speedmaster 311.30.42.30.01.006 Full Set

Omega - 311.30.42.30.01.006

Full set Omega Speedmaster 311.30.42.30.01.006 for sale.

Full set: yes

Posted at

Apr 27, 2026, 9:29 AM

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Omega Speedmaster Moonwatch Sapphire Sandwich (310.30.42.50.01.002)

Omega - 310.30.42.50.01.002 · $6,200

A 2022 Omega Speedmaster Moonwatch Sapphire Sandwich, described as overall mint condition, with protective stickers on the case and clasp.

Condition: mint condition
Year: 2022
Box And Papers: yes

Posted at

Apr 27, 2026, 8:50 AM

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Omega Speedmaster 38mm Green Dial Diamond 324.18.38.50.60.001 $11,000 Full Set

Omega - 324.18.38.50.60.001 · $11,000

Selling my Omega Speedmaster 38mm with a green dial and diamonds, dated 2024 December.

Condition: Excellent condition, very slight signs of use
Case size: 38mm
Shipping location: Singapore
Shipping duration to us: 4-5 business days

Posted at

Apr 27, 2026, 8:32 AM

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[US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW

Omega - 310.30.42.50.01.004 · $10,800

This Omega Speedmaster Moonwatch Professional is a Reverse Panda model with a 42mm case size.

Condition: Brand new, unworn, and pristine condition
Case size: 42mm
Bracelet condition: Zero hairlines

Posted at

Apr 27, 2026, 8:19 AM

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Omega Speedmaster Professional (310.30.42.50.04.001)

Omega - 310.30.42.50.04.001 · $7,600

This Omega Speedmaster Professional features a white dial on a steel bracelet and comes with boxes, booklet, and warranty card dated 8/19/2025.

Condition: Excellent
Case Size: 42mm diameter
Bracelet Links: all links included
Movement: Manual Caliber 3861

Posted at

Apr 27, 2026, 6:57 AM

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Incredible Vintage 18K Good Omega Speedmaster “Tribute To Astronauts” Ref BA145.022 Unpolished Collector Example!

Omega - BA145.022 · $47,500

This is a rare and historic Omega Speedmaster 'Tribute to Astronauts' ref BA145.022-69, one of only 1014 made in 1969. It features an 18K gold dial, correct maroon bezel, and solid 18K yellow gold case with patina.

Condition: Excellent, unpolished with patina
Case size: 42MM
Diameter: 42MM case diameter
Bracelet length: 7.5 inches

Posted at

Apr 26, 2026, 10:23 PM

Active

View listing on r/WatchExchange