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.

Buy Now on Jomashop

This is an affiliate link

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 BSOM Moonphase 304.93.44.52.03.002 (2021) | Complete Box & Papers | $10,999 Shipped

Omega - 304.93.44.52.03.002 · $10,999

The Omega Speedmaster “Blue Side of the Moon” (2021) is a stunning and underrated modern Speedmaster variant, crafted entirely from blue ceramic with a rich blue dial and Sedna gold accents.

Condition: amazing condition overall
Year: 2021
Material: blue ceramic
Movement: running strong and keeps excellent time

Posted at

Oct 18, 2025, 10:41 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Moonphase

Omega - 3575.20 · $5,250

Up for sale is an Omega Speedmaster Moonphase ref. 3575.20, which runs great and comes with full kit and documentation.

Condition: excellent
Warranty card included: true
Shipping limited to conus: true

Posted at

Oct 18, 2025, 10:24 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 – Full Kit – Excellent Condition – $5,900

Omega - 310.30.42.50.01.002 · $5,900

This Omega Speedmaster Professional Moonwatch is a highly sought-after model, known for its robust design and iconic status.

Condition: Excellent Condition
Movement: Automatic movement

Posted at

Oct 18, 2025, 10:53 AM

Active

View listing on r/WatchExchange

Omega Speedmaster racing 9900 44.25mm 329.33.44.51.01.001 under warranty

Omega - 329.33.44.51.01.001 · $5,800

This is a Omega Speedmaster racing watch, model 9900, featuring a 44.25mm case size and a factory warranty until OCT 2024.

Condition: Good condition
Case size: 44.25mm
Warranty: Factory warranty until OCT 2024

Posted at

Oct 17, 2025, 9:19 PM

Active

View listing on r/WatchExchange

Pristine Omega Speedmaster Sapphire Sandwich - Full Set!

Omega - 310.30.42.50.01.002 · $6,499

A timeless and instantly recognizable watch, meticulously cared for by the seller over two years.

Condition: Pristine
Worn: 10-12 times over two years
Crystal condition: Perfect
Bezel condition: Perfect

Posted at

Oct 17, 2025, 8:27 PM

Active

View listing on r/WatchExchange

Omega Speedmaster 3590.50

Omega - 3590.50

Title: [WTS] Omega Speedmaster 3590.50

Posted at

Oct 17, 2025, 5:28 PM

Active

View listing on r/WatchExchange

Omega 1861 Speedmaster Bracelet and Forstner Flatlink Contemporary

Omega - 1861 Speedmaster Bracelet and Forstner Flatlink Contemporary · $480

A Omega 1861 Speedmaster, sold with a Forstner bracelet and an additional Forstner Flatlink Contemporary. The first has some wear on the clasp and links, while the second is in excellent condition.

Condition: Forstner bracelet (worn) - Speedmaster bracelet (excellent)
Shipping Cost Uk: 10
Shipping Cost International: 25

Posted at

Oct 17, 2025, 4:05 PM

Active

View listing on r/WatchExchange

New & Unworn 2025 Omega Speedmaster Professional Moonwatch ‘Silver Snoopy Award’ 50th 310.32.42.50.02.001 Complete

Omega - 310.32.42.50.02.001 · $15,950

The Omega Speedmaster Professional Moonwatch 'Silver Snoopy Award' is a limited edition watch celebrating the 50th anniversary of Omega's recognition from NASA astronauts for its role in the Apollo 13 mission. It features an animated caseback with a mesmerizing display of Snoopy piloting his Command and Service Module in lunar orbit.

Condition: Brand New
Year: 2025
Contents: Complete Collector Set with all the goodies

Posted at

Oct 17, 2025, 12:00 PM

Active

View listing on r/WatchExchange