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 marui limited model 3510.21.00 automatic

Omega - 3510.21.00

The watch being listed is an Omega Speedmaster Marui Limited Model 3510.21.00 automatic.

Posted at

Feb 5, 2026, 2:38 PM

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Omega Speedmaster Reference 311.30.42.30.01.005

Omega - 311.30.42.30.01.005 · $3,925

This Omega Speedmaster professional is a beautiful watch from 2019, complete with everything and in perfect condition.

Condition: perfect
Movement: manual winding
Size: 42mm diameter
Year: 2019

Posted at

Feb 5, 2026, 1:37 PM

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Omega Speedmaster 3520.53 Box, Manual, Card - $2,850 - Reserved post for u/subengineer

Omega - 3520.53 · $2,850

A Omega Speedmaster 3520.53 Full Kit is being sold in good condition with an automatic movement and a steel case.

Condition: Good condition with some usage marks and minimal oxidation
Case Size: 39mm diameter
Water Resistance: Not specified
Movement Type: Automatic

Posted at

Feb 5, 2026, 4:18 AM

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Omega Speedmaster Professional Moonwatch Steel Step Dial Yellow Patina 1969 (Serviced)

Omega - 145.022-69 · $4,995

This Omega Speedmaster Moonwatch ref. 145.022-69 is presented in all-original configuration and features a step dial with pronounced patina across all indices.

Condition: Very nice overall condition, with honest wear consistent with age
Size: 42mm diameter
Year: 1969
Movement Status: Professionally serviced in January 2026

Posted at

Feb 4, 2026, 10:26 PM

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2024 OMEGA SPEEDMASTER WHITE DIAL 310.30.42.50.04.001 $7399

OMEGA - 310.30.42.50.04.001 · $7,399

This is a 2024 OMEGA SPEEDMASTER with a white dial and various features such as a stainless steel case, sapphire crystal, and a 50-hour power reserve.

Condition: Pre Owned, Cosmetic Condition: 9/10
Case Material: STAINLESS/SAPPHIRE
Water Resistance: 50 METERS/165 FEET

Posted at

Feb 4, 2026, 9:40 PM

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Omega Speedmaster Reduced 39mm Serviced ⏱

Omega - Speedmaster Reduced · $2,250

This is a neo-vintage Omega Speedmaster Reduced, coming with an original Omega modern box set and manual. The watch features a 39mm case and has been accurately timekeeping after service.

Case Size: 39mm
Lug To Lug: 45mm
Lug Width: 18mm

Posted at

Feb 4, 2026, 9:18 PM

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2023 Omega Speedmaster Moonwatch 42mm Moonshine Gold Green 310.60.42.50.10.001 Full Set

Omega - 310.60.42.50.10.001 · $29,200

2023 Omega Speedmaster Moonwatch 42mm Moonshine Gold Green, a manual wind mechanical watch in very good condition.

Condition: Very nice preowned condition with some light scratches on the case and bracelet
Case Dimensions: 42mm diameter
Movement: Manual Wind, Mechanical
Original Purchase Date: September 2023

Posted at

Feb 4, 2026, 8:13 PM

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