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] Omega Speedmaster Reduced two-tone

Omega Speedmaster Reduced two-tone

This Omega Speedmaster Reduced is a 39mm two-tone watch with 18k gold details. It runs within +7 seconds per day and has a perfectly working chronograph.

Posted at
Feb 10, 2026, 5:01 AM
Active
[WTS] Omega Speedmaster Professional Moonwatch Full Set

Omega Speedmaster Professional Moonwatch Full Set

Omega - 310.30.42.50.01.001 · $10,900
A timeless and iconic Omega Speedmaster Professional Moonwatch in its traditional hesalite configuration.

  • Condition: Very good overall condition with very light cosmetic marks on the hesalite crystal.
  • Case size: 42mm
  • Crystal type: Hesalite
Posted at
Feb 10, 2026, 1:22 AM
Active
[WTS] Omega Speedmaster Legend Schumacher ref 3506.61 *PRICE DROP*

Omega Speedmaster Legend Schumacher ref 3506.61 *PRICE DROP*

Omega - 3506.61.00 · $3,900
This is a clean example of the Omega Speedmaster Legend Schumacher reference 3506.61.00 with a striking red dial and special collection engraved case back honoring Michael Schumacher.

  • Condition: full kit, minimal wear on bracelet
  • Case diameter: 42mm
  • Bracelet condition: minimal wear
  • Shipping included: CONUS shipping fully insured
Posted at
Feb 9, 2026, 6:53 PM
Active
[WTS] Omega Speedmaster Day-Date Chronometer ref 3222.80 *PRICE DROP*

Omega Speedmaster Day-Date Chronometer ref 3222.80 *PRICE DROP*

Omega - 3222.80 · $3,200
This Omega Speedmaster Day-Date Chronometer ref 3222.80 features a vibrant blue dial, 40mm case, and stainless steel bracelet with full original links.

  • Condition: Excellent, minor wear on bracelet
  • Case size: 40mm diameter
  • Bracelet condition: minor wear, tiny spot of discoloration on one side
  • Shipping included: fully insured CONUS shipping
Posted at
Feb 9, 2026, 6:40 PM
Active
[WTS] Omega Speedmaster Racing - 329.30.44.51.01.001 - Box and Papers!

Omega Speedmaster Racing - 329.30.44.51.01.001 - Box and Papers!

This Omega Speedmaster Racing Chronograph is a pre-owned watch in good condition, featuring a 44.25mm case and a stainless steel bracelet.

  • Condition: Pre-owned with minor wear
  • Case size: 44.25mm diameter
  • Bracelet material: Stainless steel
Posted at
Feb 9, 2026, 5:49 PM
Active
[WTS] 2025 Omega Speedmaster Racing 44mm - 329.32.44.51.01.001 - Price Reduced!

2025 Omega Speedmaster Racing 44mm - 329.32.44.51.01.001 - Price Reduced!

This Omega Speedmaster Racing features a bold design with orange racing accents and the Caliber 9900 Master Chronometer movement. It comes with a factory black micro-perforated leather strap and an original Omega wooden presentation box.

  • Condition: Fantastic preowned condition, barely worn
  • Movement: Omega Caliber 9900, Co-Axial, anti-magnetic, column-wheel chronograph
  • Power reserve: approximately 60 hours
  • Strap: factory black micro-perforated leather racing strap with orange rubber lining
Posted at
Feb 9, 2026, 5:47 PM
Active
[WTS] 2023 Omega Speedmaster Moonphase Sedna Gold

2023 Omega Speedmaster Moonphase Sedna Gold

2023 Omega Speedmaster Moonphase Sedna Gold, a high-end watch featuring a brown sun-brushed dial and precision moonphase display at 6 o'clock.

  • Condition: Excellent, with light signs of wear
  • Case Size: 44.25mm diameter
  • Case Material: 18k Sedna Gold
  • Dial Color: Brown
Posted at
Feb 9, 2026, 5:25 PM
Active
[WTS] Omega Speedmaster Racing 44.25, gray dial full kit, new in box. Inner, outer and shipping boxes, all three cards, hang tag and factory stainless bracelet with extra link. Reference number 329.30.44.51.06.001. New Orleans, LA

Omega Speedmaster Racing 44.25, gray dial full kit, new in box. Inner, outer and shipping boxes, all three cards, hang tag and factory stainless bracelet with extra link. Reference number 329.30.44.51.06.001. New Orleans, LA

This Omega Speedmaster Racing features a gray dial and comes with a full kit, including inner and outer boxes, all three cards, hang tag, and factory stainless bracelet with extra link.

  • Condition: New in box
  • Box count: 3
  • Bracelet type: factory stainless
Posted at
Feb 9, 2026, 2:50 PM
Active