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

OMEGA SPEEDMASTER PROFESSIONAL MOONSWATCH 35735000 *FULL SET* (B&P) [WTS] $5750

OMEGA SPEEDMASTER PROFESSIONAL MOONSWATCH 35735000 *FULL SET* (B&P) $5750

Omega - 35735000 · $5,750
Full set, Speedmaster Professional Moonwatch in a box (B&P)

  • Set: full set
Posted at
Jan 25, 2026, 9:40 PM
Active
[WTS] Omega Speedmaster Broad Arrow 321.10.42.50.01.001 2019 $3,999 [USA]

Omega Speedmaster Broad Arrow 321.10.42.50.01.001 2019 $3,999 [USA]

This Omega Speedmaster Broad Arrow is from 2019 with a crisp case and running perfectly. It comes on a massive bracelet that can fit most wrists.

  • Condition: Incredible-condition
  • Dimensions: 42mm diameter
  • Year: 2019
Posted at
Jan 25, 2026, 7:31 PM
Active
[WTS] 2007 Omega Speedmaster Date 3210.50 - $2,299

2007 Omega Speedmaster Date 3210.50 - $2,299

Omega - 3210.50 · $2,299
An Omega Speedmaster Date Chronograph ref. 3210.50 from 2007 in good overall condition, featuring a black dial and stainless steel bracelet.

  • Condition: Good overall condition, signs of wear
  • Case size: 40mm diameter
  • Serial number: 81.6M (circa 2007)
  • Dial color: Black
Posted at
Jan 25, 2026, 7:16 PM
Active
[WTS] Unworn 50th Anniversary Omega Silver Snoopy Award Speedmaster Full Set

Unworn 50th Anniversary Omega Silver Snoopy Award Speedmaster Full Set

This is an unworn Omega Silver Snoopy Award Speedmaster, a limited edition model to celebrate the 50th anniversary of the Snoopy award.

  • Condition: Unworn
  • Year: 2023
  • Anniversary: 50th
Posted at
Jan 25, 2026, 7:09 PM
Active
[WTS] Omega Speedmaster Professional Snoopy 50th Anniversary Ref: 310.32.42.50.02.001 BNIB

Omega Speedmaster Professional Snoopy 50th Anniversary Ref: 310.32.42.50.02.001 BNIB

Omega - 310.32.42.50.02.001 · $12,700
This Omega Speedmaster Snoopy 50th Anniversary watch is a brand new, unworn model with a complete package and extra travel box.

  • Condition: Brand new, never worn (BNIB)
  • Case Size: 40mm diameter
  • Water Resistance: unknown
  • Warranty: valid until end of 2025
Posted at
Jan 25, 2026, 6:07 PM
Active
[WTS] Omega Speedmaster sapphire Sandwich 2021, comes as full set (-2 links) $5,999 shipped

Omega Speedmaster sapphire Sandwich 2021, comes as full set (-2 links) $5,999 shipped

Up for sale is a Omega Speedmaster sapphire sandwich from 2021, comes as full set with original inner/outer box and papers.

  • Condition: Excellent
  • Year: 2021
  • Case Size: 42mm
  • Material: Stainless Steel
Posted at
Jan 25, 2026, 3:52 PM
Active
[WTS] Omega Speedmaster "First Omega in Space" (FOIS) 2024 ed. w/ Box & Papers

Omega Speedmaster "First Omega in Space" (FOIS) 2024 ed. w/ Box & Papers

This Omega Speedmaster "First Omega in Space" (FOIS) is the 2024 edition, featuring a ref. 310.30.40.50.06.001 model number.

  • Condition: very good
  • Year purchased: 2025
  • Box and papers included: true
Posted at
Jan 25, 2026, 2:48 PM
Active
[WTS] Omega Speedmaster Professional Full Kit w Extras!

Omega Speedmaster Professional Full Kit w Extras!

Omega - 3861 Hesalite · $5,500
This Omega Speedmaster Professional Moonwatch features a Cal. 3861 Master Chronometer movement and comes with upgrades such as a sapphire display caseback, making it a true Hesalite sandwich.

  • Condition: Pre-owned with normal wear/use consistent with daily rotation
  • Caliber: Cal. 3861 (Master Chronometer)
  • Bracelet adjustment type: tool-less sliding clasp
  • Caseback material front: Hesalite
Posted at
Jan 25, 2026, 1:30 PM
Active
[WTS] Omega "Michael Schumacher" Speedmaster Limited to only 5555.

Omega "Michael Schumacher" Speedmaster Limited to only 5555.

Omega - 3529.50.00 · $2,200
This limited edition Omega Speedmaster 'Michael Schumacher' chronograph features a stainless steel case, black racing dial, day/date display, tachymetre bezel, and is powered by an automatic movement. Produced in 2003, it measures 39mm in size.

  • Condition: neat and clean with some marks on the bezel
  • Case size: 39mm diameter
  • Bracelet size limit: 7.5 inch wrist
  • Water resistance: unknown
Posted at
Jan 25, 2026, 8:23 AM
Active