Omega Speedmaster Speedmaster Professional Moonphase Broad Arrow Stainless Steel / Silver / Strap

Reference 3875.30.31

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
50

Current Listings

[WTS] Omega Speedmaster 311.93.44.51.99.001 Grey Side of the Moon 2018 Year

Omega Speedmaster 311.93.44.51.99.001 Grey Side of the Moon 2018 Year

This Omega Speedmaster Grey Side of the Moon is a 2018 model, featuring a pre-owned watch in excellent condition with minimal scratches.

  • Condition: Preowned, minor hairline scratches and possibly a clean crystal with marks under strong magnification
  • Year: 2018
  • Shipping method: FedEx, insured, 2-day shipping
Posted at
Oct 23, 2025, 1:25 AM
Active
[WTS] Omega OEM Speedmaster Black Rubber Strap OEM Deployant Clasp (Reserved Post)

Omega OEM Speedmaster Black Rubber Strap OEM Deployant Clasp (Reserved Post)

A black rubber strap for the Omega Speedmaster Professional with a stainless steel deployant clasp, available for sale.

Posted at
Oct 22, 2025, 9:28 PM
Active
[WTS] Omega Speedmaster. Mother of pearl dial. 39mm. Sapphire Crystal. Auto. 🔥

Omega Speedmaster. Mother of pearl dial. 39mm. Sapphire Crystal. Auto. 🔥

Omega - Speedmaster · $2,650
A rare Omega Speedmaster with a mother of pearl dial and sapphire crystal, available for sale in excellent condition.

  • Diameter: 39mm
  • Movement: auto
Posted at
Oct 22, 2025, 8:45 PM
Active
[WTS] 2023 Omega Speedmaster Moonwatch Professional 310.32.42.50.01.001 - Full Set

2023 Omega Speedmaster Moonwatch Professional 310.32.42.50.01.001 - Full Set

A beautiful example of the iconic Omega Speedmaster Moonwatch Professional from 2023, featuring a clean and sporty design.

  • Condition: Excellent preowned condition
  • Material: Hesalite
  • Size: 42mm diameter
  • Scope of delivery: Complete set, inner/outer boxes, all 3 cards, hang tag, extra strap
Posted at
Oct 22, 2025, 8:28 PM
Active
[WTS]🔥OMEGA SPEEDMASTER MOONWATCH PROFESSIONAL SAPPHIRE SANDWICH 310.30.42.50.01.002 COMPLETE 10/2025 WITH STICKERS!!!🔥

🔥OMEGA SPEEDMASTER MOONWATCH PROFESSIONAL SAPPHIRE SANDWICH 310.30.42.50.01.002 COMPLETE 10/2025 WITH STICKERS!!!🔥

A brand new, unworn OMEGA Speedmaster Moonwatch Professional Sapphire Sandwich with a black dial and stainless steel case.

  • Condition: Brand new/unworn
  • Case Size: 42mm diameter
  • Material: Stainless Steel
Posted at
Oct 22, 2025, 8:18 PM
Active
[WTS] Omega Speedmaster Chronograph Broad Arrow Tokyo Olympic 2020

Omega Speedmaster Chronograph Broad Arrow Tokyo Olympic 2020

The Omega Speedmaster Chronograph Broad Arrow Tokyo Olympic 2020 features a stainless steel case with a clean white dial, bold legible arabic numerals, and broad arrow hands. The chronograph hand reveals the Olympic rings, and the watch is powered by an automatic Co-Axial calibre 3313.

  • Condition: Minimal wear and light polish on bracelet and clasp
  • Case size: 42mm diameter x 48 height
  • Lug width: 20mm
  • Wrist size recommendation: 7.8in
Posted at
Oct 22, 2025, 8:07 PM
Active
[WTS] Omega Speedmaster Two Tone Reduced

Omega Speedmaster Two Tone Reduced

Omega - 3714.20.80 · $2,500
A two tone Omega Speedmaster with a white dial and gold subdials, featuring an 18k gold bezel.

  • Condition: Good, some wear on the case and bezel
  • Movement: Cal 1140
  • Size: 39mm diameter
Posted at
Oct 22, 2025, 7:51 PM
Active
[WTS] Omega Speedmaster Reduced - Mother of Pearl - White

Omega Speedmaster Reduced - Mother of Pearl - White

A super rare and unique Omega Speedmaster with a Mother of Pearl dial that 'pops like no other watch' is for sale. The crystal looks clean, but the case and bezel could benefit from polishing.

  • Condition: Decent condition, light scratching on case, hairlines on bezel
  • Case material: Steel
  • Dial color: Mother of Pearl White
Posted at
Oct 22, 2025, 5:03 PM
Active
[WTS] Omega Speedmaster CK2998 Limited Edition “Blue Panda” - Full Set - Price Reduced ‼️✈️

Omega Speedmaster CK2998 Limited Edition “Blue Panda” - Full Set - Price Reduced ‼️✈️

Omega - CK2998 · $7,395
This Omega Speedmaster CK2998 Limited Edition 'Blue Panda' is a modern classic with a striking design. It features a 40mm stainless steel case and an opaline silver dial with blue subdials. The watch comes complete with its outer box, inner box, instruction manual, card sleeve, international warranty card, and pictograms card.

  • Condition: Excellent, barely worn
  • Case Size: 40mm diameter
  • Movement: Manual winding OMEGA calibre 1861
Posted at
Oct 22, 2025, 4:35 PM
Active