Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet

Reference 310.55.42.50.13.001

About this watch

The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet is a masterpiece of horology, blending art, history, and cutting-edge technology. Crafted from Sedna Gold, this watch boasts a unique color that's both warm and striking. Its round shape and sunburst brown finish give it a luxurious feel, while the diamond-set bezel adds a touch of elegance. The 3861 is equipped with a chronograph feature, allowing you to measure elapsed time with precision. At its heart lies the Omega caliber 3861, an updated version of the legendary caliber 861/1861, featuring a co-axial escapement and silicon balance spring for accuracy and reliability. Master Chronometer certified by METAS, this watch has undergone rigorous testing to withstand magnetic fields of up to 15,000 gauss. Its sleek design and exceptional craftsmanship make it a standout in any collection. Whether you're at a formal event or a casual outing, this watch is sure to turn heads.
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Key Features

  • Sedna Gold case
  • Manual-winding chronograph movement
  • Co-axial escapement and silicon balance spring
  • Master Chronometer certified by METAS
  • Diamond-set bezel
  • Water resistance up to 50 meters
  • 42.00 mm diameter and 13.18 mm height

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet
Reference
310.55.42.50.13.001
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
Sedna Gold 42mm
Dial Color
Brown
Crystal
Sapphire
Water Resistance
50

Current Listings

FSO Like New Omega Speedmaster Professional Moonwatch - $4,650 - Ref 310.30.42.50.01.001

FSO Like New Omega Speedmaster Professional Moonwatch - $4,650 - Ref 310.30.42.50.01.001

Omega - 310.30.42.50.01.001 · $4,650.005
The Omega Speedmaster Professional Moonwatch is a high-end watch with a hesalite crystal, running within spec and featuring a flawless design.

  • Condition: Like New
  • Crystal type: hesalite
  • Bracelet adjustment: on the fly adjustment clasp
  • Warranty: no warranty included
Posted at
Jun 7, 2025, 10:09 AM
Active
FSO Like New Omega Speedmaster Professional Moonwatch - $4,550 - Ref 310.30.42.50.01.001

FSO Like New Omega Speedmaster Professional Moonwatch - $4,550 - Ref 310.30.42.50.01.001

Omega - 310.30.42.50.01.001 · $4,550.005
This Omega Speedmaster Professional Moonwatch is a few weeks old, purchased new from Watchmaxx, and has been worn only a dozen times carefully. It looks amazing and includes all original packaging and accessories.

  • Condition: Like new
  • Hesalite crystal: true
  • On the fly adjustment clasp: yes
  • Bracelet: new
Posted at
Jun 7, 2025, 10:09 AM
Active
FSO Like New Omega Speedmaster Professional Moonwatch - $4,450 - Ref 310.30.42.50.01.001

FSO Like New Omega Speedmaster Professional Moonwatch - $4,450 - Ref 310.30.42.50.01.001

Omega - 310.30.42.50.01.001 · $4,450.004
This Omega Speedmaster Professional Moonwatch features a hesalite crystal and is in flawless condition, with no scratches or marks of any kind. It has been worn carefully only a dozen times and runs within spec.

  • Condition: Like New
  • Age: a few weeks old
  • Bracelet: new bracelet with on the fly adjustment clasp
  • Crystal: hesalite crystal
Posted at
Jun 7, 2025, 10:09 AM
Active
FSO - Omega Speedmaster Professional Moonwatch - Ref 310.30.42.50.01.001

FSO - Omega Speedmaster Professional Moonwatch - Ref 310.30.42.50.01.001

Omega - 310.30.42.50.01.001 · $5,500.006
A brand-new Omega Speedmaster Professional Moonwatch with hesalite crystal, purchased only a few weeks ago from Watchmaxx.

  • Condition: Flawless and like new
  • Warranty: No warranty included
  • Crystal type: Hesalite crystal
Posted at
Jun 7, 2025, 10:09 AM
Active
Withdrawn Omega Speedmaster Professional Moonwatch - Ref 310.30.42.50.01.001

Withdrawn Omega Speedmaster Professional Moonwatch - Ref 310.30.42.50.01.001

Omega - 310.30.42.50.01.001 · $5,250.005
This Omega Speedmaster Professional Moonwatch is a few weeks old, purchased from Watchmaxx on May 19th of this year, and has been worn only a dozen times carefully. It is running within spec and looks amazing.

  • Condition: Like new
  • Material: Hesalite crystal
  • Warranty: No warranty included
Posted at
Jun 7, 2025, 10:09 AM
Active
[wts] MINT JAN 2025 Omega Speedmaster racing 9900 44.25mm 329.30.44.51.01.001

MINT JAN 2025 Omega Speedmaster racing 9900 44.25mm 329.30.44.51.01.001

This Omega Speedmaster racing is a really clean piece with a 44.25mm case size, featuring a January 2025 production date and coming with the full set of accessories. It's available for sale at a discounted price.

  • Condition: Mint
  • Case size: 44.25mm diameter
  • Warranty status: Full
Posted at
Jun 7, 2025, 12:08 AM
Active
[wts] Omega Speedmaster racing 9900 44.25mm 329.33.44.51.01.001 under warranty

Omega Speedmaster racing 9900 44.25mm 329.33.44.51.01.001 under warranty

This Omega Speedmaster racing watch is a 44.25mm model with factory warranty, dated OCT 2024.

  • Condition: good
  • Warranty: factory
  • Size: 44.25mm diameter
Posted at
Jun 6, 2025, 10:52 PM
Active
Omega Speedmaster - Silver Snoopy - 310.32.42.50.02.001 ( excellent )

Omega Speedmaster - Silver Snoopy - 310.32.42.50.02.001 ( excellent )

Omega - 310.32.42.50.02.001 · $14,950.001
This Omega Speedmaster Moonwatch Silver Snoopy Award 50th Anniversary is a stainless steel watch with a 42mm case and an Omega Master Chronometer Movement.

  • Condition: Excellent
  • Case material: stainless steel
  • Case size: 42mm
Posted at
Jun 6, 2025, 3:22 PM
Active