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 38 | Black Dial Chronograph | 38mm $4500

Omega - 324.30.38.50.01.001 · $4,500

The Omega Speedmaster 38 features the iconic design in a versatile 38mm case, powered by the reliable Omega Caliber 3330 chronograph movement.

Condition: Very good
Case size: 38mm
Water resistance: 100m depth rating

Posted at

Feb 28, 2026, 4:19 PM

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Omega Speedmaster. 39mm. Special Dial.

Omega - Speedmaster · $2,250

This Omega Speedmaster is an automatic watch with a special dial and 39mm case size.

Diameter: 39mm
Movement: Automatic

Posted at

Feb 28, 2026, 11:13 AM

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- Omega Speedmaster Professional 1861 Bracelet

Omega - Speedmaster Professional 1861 · $650

This is a stainless steel bracelet for the Omega Speedmaster Professional 1861 watch, sold in pristine condition with all links and screws included.

Condition: Pristine
Bracelet material: stainless steel

Posted at

Feb 28, 2026, 10:09 AM

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[WTS] Omega Speedmaster Racing 44.25mm New. Reference 329.30.44.51.06.001. Full kit, shipping, inner and outer boxes, hang tag, manuals. 12/27/2025 warranty card. $7750 shipped from Orlando, Florida.

Omega Speedmaster Racing 44.25mm New. Reference 329.30.44.51.06.001. Full kit, shipping, inner and outer boxes, hang tag, manuals. 12/27/2025 warranty card. $7750 shipped from Orlando, Florida.

Omega - 329.30.44.51.06.001 · $7,750

This Omega Speedmaster Racing features a large case size of 44.25mm, making it a statement piece for any watch collector. The watch comes with a full kit, including shipping, inner and outer boxes, hang tag, manuals, and a warranty card valid until 12/27/2025.

Condition: New
Case Size: 44.25mm

Posted at

Feb 27, 2026, 5:32 PM

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Omega Speedmaster Professional Moonwatch Full Steel 145.022-69 Ghost Bezel Yellow Patina Step Dial 1969 (Serviced) 🔥

Omega - 145.022-69 · $5,250

This Omega Speedmaster Moonwatch presents beautifully in full steel, showcasing a strong and sharp case with thick lugs that retain their original shape. The tritium lume remains reactive under UV light, confirming its authenticity.

Case size: 42mm
Year: 1969
Bezel condition: ghost tone

Posted at

Feb 27, 2026, 12:41 PM

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