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. Broad Arrow. Gorgeous Dial. See through movement. 馃敟

Omega Speedmaster. Broad Arrow. Gorgeous Dial. See through movement. 馃敟

Omega - 321.13.44.50.02.001 $3,275
This Omega Speedmaster features a Broad Arrow dial and a see-through movement, making it a stunning timepiece.

  • Movement: automatic
  • Dial: broad arrow dial
  • Shipping: Fedex with insurance
Posted at
Oct 21, 2025, 6:16 PM
Active
[WTS] Omega Speedmaster Professional ( 310.30.42.50.01.001 ) - Like New!

Omega Speedmaster Professional ( 310.30.42.50.01.001 ) - Like New!

Omega - 310.30.42.50.01.001 $4,895
A 42mm Omega Speedmaster Professional in amazing condition, with minimal wear and a complete set of accessories.

  • Condition: Like New
  • Case size: 42mm diameter
  • Movement type: automatic
Posted at
Oct 21, 2025, 5:42 PM
Active
[WTS] 2025 Omega Speedmaster Moonwatch Sapphire Sandwich 310.30.42.50.01.002 Full Set

2025 Omega Speedmaster Moonwatch Sapphire Sandwich 310.30.42.50.01.002 Full Set

Omega - 310.30.42.50.01.002 $7,000
A 2025 Omega Speedmaster Professional Moonwatch Sapphire Sandwich, purchased in January 2025 and running perfectly.

  • Condition: Excellent preowned condition with minor signs of wear
  • Year: 2025 (factory warranty until Jan 2030)
  • Size: 42mm diameter
  • Retail: $9000
Posted at
Oct 21, 2025, 4:37 PM
Active
[WTS] Omega Speedmaster Dark Side Moon Apollo 8 44mm Ceramic Box Papers 2024

Omega Speedmaster Dark Side Moon Apollo 8 44mm Ceramic Box Papers 2024

Omega - 310.92.44.50.01.001 $11,950
A wonderful example of the Omega Speedmaster Dark Side Moon Apollo 8 model, featuring a black ceramic skeletonized dial and updated laser ablated moon surface. Paired with a Saturn V rocket constant seconds hand, this is one of the most detailed black ceramic watches to wear.

  • Condition: Mint condition, appears completely unworn
  • Case size: 44.25mm
Posted at
Oct 21, 2025, 4:34 PM
Active
[WTS] Omega Speedmaster Mark II

Omega Speedmaster Mark II

Omega - 145.014 $2,650
A 70's Omega Speedmaster Mark II in great shape, keeping time and chronograph functioning as it should. The watch has a chunky case that balances out with the drape of the bracelet, making it wear well.

  • Condition: Excellent, with minor degradation of paint on hour counter hand
  • Case Dimensions: 42.5mm width x 45.5mm length x 15mm thickness
  • Bracelet Adjustability: expandable to accommodate wrists up to 6.75"
  • Water Resistance Status: not guaranteed
Posted at
Oct 21, 2025, 3:58 PM
Active
[WTS] OMEGA Speedmaster '57 Heritage, George Clooney, Neovintage Chrono, rare automatic version

OMEGA Speedmaster '57 Heritage, George Clooney, Neovintage Chrono, rare automatic version

OMEGA - 331.10.42.51.01.002 $4,200
The OMEGA Speedmaster '57 Heritage is a rare automatic version that bridges two worlds: precision instrument and personal treasure. It features a black dial with beige indices, sub-dials at 9 and 3 o'clock, and recessed hour markers with Super-LumiNova.

  • Condition: pre-owned with minor cosmetic flaws (AR coating mark)
  • Case size: 41.5mm diameter
  • Movement type: automatic chronograph
Posted at
Oct 21, 2025, 3:38 PM
Active
[WTS] Omega Speedmaster Triple Date 3220.50 - 40mm - $2350

Omega Speedmaster Triple Date 3220.50 - 40mm - $2350

Omega - 3220.50 $2,350
This Omega Speedmaster Triple Date 3220.50 features a classic look with additional Chronometer functionality, available for sale in very good condition.

  • Condition: Very good pre-owned condition
  • Case diameter: 40mm
  • Crystal condition: clean
  • Bracelet condition: desk rash, minor scratches
Posted at
Oct 21, 2025, 2:55 PM
Active
[WTS][US] Omega Speedmaster First Omega in Space - FOiS - 310.30.40.50.06.001 - Full Set - Brand New

[US] Omega Speedmaster First Omega in Space - FOiS - 310.30.40.50.06.001 - Full Set - Brand New

Omega - 310.30.40.50.06.001 $7,450
This Omega Speedmaster First Omega in Space watch is a brand new timepiece that comes with a full set, including the watch itself, box, historical manual, user manual, microfiber cloth, and other accessories. It features a fantastic condition with only stickers on the case and clasp.

  • Condition: Brand New
  • Case size: 40mm diameter
  • Serial number included: true
Posted at
Oct 21, 2025, 9:11 AM
Active
[WTS] Omega Speedmaster 3861 Hesalite (6k)and Sapphire (7k) 馃敟Brand New 2024馃敟

Omega Speedmaster 3861 Hesalite (6k)and Sapphire (7k) 馃敟Brand New 2024馃敟

This listing is for a Brand New Omega Speedmaster 3861, available in both Hesalite and Sapphire crystal options. The watch comes complete with its original box, warranty card dated 2024, and other accessories.

  • Condition: Brand New
  • Material: Hesalite and Sapphire
  • Year: 2024
Posted at
Oct 21, 2025, 8:23 AM
Active