Omega Speedmaster Speedmaster Professional Moonphase / Strap

Reference 3876.50.31

About this watch

The Omega Speedmaster Professional Moonphase is an exquisite blend of precision, technology, and style, boasting a storied history in horology. With its classic yet sporty design, this watch exudes sophistication, featuring a black dial highlighted by the stainless steel case. The stick and dot indexes provide excellent visibility, while the moonphase complication adds a touch of elegance to its sporty demeanor. At its heart lies the Omega caliber 1866, a handwound chronograph movement renowned for precision and reliability. With a power reserve of 45 hours, it's designed to withstand daily wear and tear, making it an excellent choice for both men and women. The watch's durability is further enhanced by its sapphire crystal, ensuring that the beauty of the dial remains unblemished over time. Water-resistant up to 50 meters, this watch is suitable for splashes and brief immersions in water. Whether you're a collector, space enthusiast, or simply looking for a reliable timepiece, the Speedmaster Professional Moonphase ticks all the boxes, offering a perfect blend of functionality, style, and history.
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MSRP: $5,900
Market Price: $5,287

Key Features

  • Omega Caliber 1866 Handwound Chronograph Movement
  • 42mm Stainless Steel Case with Tachymeter Bezel
  • Sapphire Crystal for Scratch-Resistant Durability

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonphase / Strap
Reference
3876.50.31
Movement
1866
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph
  • Moonphase
Case
Stainless Steel 42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] 2015 Omega Speedmaster Grey Side of Moon Platinum 311.93.44.51.99.001 Full Set

2015 Omega Speedmaster Grey Side of Moon Platinum 311.93.44.51.99.001 Full Set

This is a 2015 Omega Speedmaster Grey Side of Moon Platinum, featuring a grey ceramic case and a platinum dial.

  • Condition: Very nice condition!
  • Case material: Grey Ceramic
  • Bezel material: Grey Ceramic Tachymeter Bezel
  • Dial color: Platinum
Posted at
Aug 28, 2025, 7:44 PM
Active
[WTS] 2023 Omega Speedmaster Hesalite $5250

2023 Omega Speedmaster Hesalite $5250

A 2023 Omega Speedmaster (Hesalite) in excellent condition, with a pristine bracelet and still under warranty. It was bought from a local AD in 2023 and only worn a handful of times.

  • Condition: Excellent
  • Year: 2023
  • Warranty: 2+ years remaining
Posted at
Aug 28, 2025, 6:34 PM
Active
[WTS] Omega Speedmaster Date 3210.52 - Casino Dial

Omega Speedmaster Date 3210.52 - Casino Dial

Omega - 3210.52.00 · $2,600
The Omega Speedmaster Date ref. 3210.52.00, nicknamed the 'Casino Dial', is a striking timepiece with red-and-black roulette-style subdials on a black dial.

  • Condition: Excellent (light wear only)
  • Case size: 40mm
  • Movement type: automatic chronograph
  • Crystal material: sapphire
Posted at
Aug 28, 2025, 5:57 PM
Active
[WTS] Omega Speedmaster 38 324.30.38.50.01.001

Omega Speedmaster 38 324.30.38.50.01.001

A Omega Speedmaster 38 purchased in September 2023, with box and papers included.

  • Origin: Goldsmiths
  • Includes: box, papers, date change tool, instruction book, OMEGA outer box, Watches of Switzerland outer box
Posted at
Aug 28, 2025, 3:35 PM
Active
[WTS] Horus Omega Fitted Rubber Straps - Speedmaster, Seamaster, etc

Horus Omega Fitted Rubber Straps - Speedmaster, Seamaster, etc

· $35
Horus Omega Fitted Rubber Straps for Speedmaster and other modern Omega models are available for sale. These curved straps come in various colors and fit 20mm bands.

  • Condition: Like New
  • Colors: 10 different color options (Royal Blue, Light Blue, Lime Green, Red, Hot Pink, Pink, Orange, Yellow, Lavender, Gray)
Posted at
Aug 28, 2025, 2:57 PM
Active
[WTS] Omega Speedmaster Reduced Date Annual Calendar Chronograph Silver Dial (Papers/Mint)

Omega Speedmaster Reduced Date Annual Calendar Chronograph Silver Dial (Papers/Mint)

Omega - 3521.30.00 · $2,300
This Omega Speedmaster Reduced Triple Calendar Ref. 3521.30.00 is a compact and highly functional chronograph presented in all-original condition.

  • Condition: Mint, minimal signs of wear
  • Case size: 39mm diameter
  • Bracelet length: up to 7.5 inches (19.5 cm)
  • Movement tested: yes
Posted at
Aug 28, 2025, 12:48 PM
Active