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 Professional Rubber Strap + Clasp

Omega · $499

Additional Details: Like new, pristine. For the Moonwatch works on older Moonwatch models as well.

Condition: like new
Lug Width: 20mm
Clasp Width: 16mm

Posted at

Dec 23, 2025, 12:15 PM

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Omega Speedmaster Reduced Ref. 3510.50.00 (Watch Only, Excellent Condition) $2450

Omega - 3510.50.00 · $2,450

A 28-year-old Omega Speedmaster Reduced in near-new condition, featuring a 39mm case and automatic movement.

Condition: Excellent, verging on like-new condition
Age: approximately 28 years old
Case size: 39mm diameter
Bracelet length: 22 total links

Posted at

Dec 23, 2025, 11:42 AM

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Omega Speedmaster Saphire full set 2021

Omega - Speedmaster Professional 'Saphire Sandwich' Edition · $4,500

The Omega Speedmaster Professional 'Saphire Sandwich' Edition features the 3861 Movement, and comes with its original box, papers, and warranty card.

Condition: Excellent
Movement: 3861

Posted at

Dec 23, 2025, 11:06 AM

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Omega Speedmaster 3520.53 Box & Card - $2,900

Omega - 3520.53 · $2,900

A 39mm Omega Speedmaster 3520.53 in great condition, featuring an automatic movement and a steel case on an original Omega Steel bracelet.

Condition: 8.8/10 great condition with some usage marks and micro scratches on the blue AR coating
Case size: 39mm diameter
Movement type: automatic
Bracelet length: fits up to 7 inch wrists

Posted at

Dec 22, 2025, 9:30 PM

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View listing on r/WatchExchange