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 Hesalite (ref. 3103042500100)

Omega - 3103042500100 · $5,350

A recently serviced Omega Speedmaster Professional Moonwatch with a newer 3861 movement, featuring Hesalite crystal. The watch comes with full set, including warranty card, pictograms, master chronometer certification, and extra links.

Condition: Very good, some small marks on the case and desk diving marks on the clasp
Movement: 3861, newer
Set included: full set, warranty card dated January 2021, pictograms, master chronometer certification, extra links

Posted at

Apr 20, 2026, 7:12 PM

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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 · $10,850

This Omega Speedmaster Moonwatch Professional is a 42mm Reverse Panda model available as a full set, complete with all original accessories.

Condition: Brand new, unworn, and in pristine condition
Case Size: 42mm
Set Contents: Watch,Box (inner & outer),Travel case,Historical booklet,User manual,Microfiber cloth,Master chronometer card,Warranty card

Posted at

Apr 20, 2026, 6:44 PM

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2024 Omega Speedmaster 3861 Sapphire Sandwich 310.30.42.50.01.002 - Complete Set

Omega - 310.30.42.50.01.002 · $6,800

The Omega Speedmaster Moonwatch Professional is a 42mm chronograph watch featuring sapphire crystal front and case back, stainless steel bracelet, and the 3861 movement. It comes as a complete set with warranty cards, travel case, and other accessories.

Condition: Very good condition with minimal wear on the case and bracelet.
Case size: 42mm
Movement: 3861
Bracelet material: stainless steel

Posted at

Apr 20, 2026, 5:37 PM

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Omega Speedmaster Moonwatch Exhibition Back 3592.50 Apollo XI Watch

Omega - Speedmaster Moonwatch Exhibition Back 3592.50 Apollo XI

Image link: https://imgur.com/a/2pYMJf8

Posted at

Apr 20, 2026, 11:37 AM

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Omega Speedmaster Triple Calendar Blue Sunburst Dial 3523.80 39mm | Great Condition (Serviced) | $2500

Omega - 3523.80 · $2,500

This Omega Speedmaster Triple Calendar features a blue sunburst dial, stainless steel case, and automatic movement. It's compact at 39mm and comes with an OEM bracelet.

Condition: Great condition, serviced
Movement: Omega Cal. 1151 (based on Valjoux 7751)
Case dimensions: 44.7mm lug-to-lug, 13–14mm thickness
Bracelet: OEM, fits up to 19cm (7.5 inches)

Posted at

Apr 20, 2026, 12:03 AM

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Omega Speedmaster Racing Reverse Panda dial New/ unworn Full set 6/2025

Omega - 326.30.40.50.01.002 · $4,300

The Omega Speedmaster Racing features a black dial with classic Speedmaster heritage and modern refinements, offering an ideal balance of sportiness and versatility.

Condition: New/unworn
Case Size: 40mm
Bracelet Length: 7-inch
Warranty Expiration: 6/2025

Posted at

Apr 19, 2026, 4:31 PM

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Omega Speedmaster Racing - 329.30.44.51.01.001 - Box and Papers

Omega - 329.30.44.51.01.001 · $5,795

This is a Omega Speedmaster Racing Chronograph, model number 329.30.44.51.01.001, in pre-owned condition.

Condition: pre-owned with minor wear
Size: 44.25mm diameter
Bracelet material: stainless steel

Posted at

Apr 19, 2026, 1:53 PM

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Omega Speedmaster Date Chronometer 3210.50.00 — Big Seahorse, Cal. 1164 (Serviced) — $2,150 Shipped (Tariff Coverd)

Omega - 3210.50.00 · $2,150

This Omega Speedmaster Date Chronometer features a classic black dial and iconic tachymeter bezel, paired with the Cal. 1164 automatic chronometer-certified movement.

Condition: Honest wear consistent with age, minor signs of use on bezel insert
Case size: 40mm diameter
Movement: Cal. 1164 (ETA 7750 base)
Water resistance: unknown

Posted at

Apr 19, 2026, 8:21 AM

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