Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet

Reference 310.55.42.50.51.001

About this watch

The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold is a stunning blend of luxury and functionality, with its Sedna gold construction and intricate chronograph features. The watch's sheer elegance is undeniable, with a black sunburst finish contrasting beautifully with gem-set indexes and ruby accents. Certified as a Master Chronometer by METAS, the Omega caliber 3861 movement is an engineering marvel, resistant to magnetic fields up to 15,000 gauss. With small seconds, hours, and minutes hands, the chronograph functionality offers precision timing. The watch's durability is also noteworthy, with sapphire glass adding scratch resistance. The Sedna gold bracelet ensures a secure fit, while its adjustability makes it comfortable for wearers of all wrist sizes. This timepiece is not just a luxury item but a conversation starter, status symbol, and piece of horological history.
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Key Features

  • Omega caliber 3861 movement with Co-Axial escapement and silicon balance spring
  • Sedna gold construction with gem-set indexes and ruby accents
  • 50m water resistance with sapphire glass scratch resistance
  • Chronograph functionality with small seconds, hours, and minutes hands
  • Adjustable Sedna gold bracelet for secure fit on all wrist sizes

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet
Reference
310.55.42.50.51.001
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
Sedna Gold 42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster Moonphase 42mm 3575.20 (2001 Box and Papers)

Omega Speedmaster Moonphase 42mm 3575.20 (2001 Box and Papers)

Omega - 3575.20 · $4,750
A pre-owned Omega Speedmaster Moonphase with a 42mm case size, featuring a moon phase display. The watch is in great condition, but shows some signs of wear.

  • Condition: Pre-owned, slight wear on bracelet and clasp, marks on bezel
  • Case Size: 42mm
  • Bracelet Links: 16.5 links
  • Service History: Unknown ( -5 s/d, 230+ AMP)
Posted at
Feb 4, 2025, 11:23 AM
Active
[WTS] Omega Speedmaster Hesalite 42mm 3572.50 (Watch and Card)

Omega Speedmaster Hesalite 42mm 3572.50 (Watch and Card)

Omega - 3572.50 · $4,050
A 42mm Omega Speedmaster Hesalite is being listed in great pre-owned condition, featuring a micro-scratched hesalite crystal and some nicks by the tachymeter. The watch includes 15.5 links and a warranty card.

  • Condition: Pre-owned, with minor scratches and nicks on the hesalite crystal
  • Service history: Unknown
  • Water resistance: +13 s/d (not specified)
  • Movement amp hours: >280
Posted at
Feb 4, 2025, 11:18 AM
Active
2024 Omega Speedmaster Moonwatch Hesalite 42mm 31.30.42.50.01.001 BOXES/PAPERS!

2024 Omega Speedmaster Moonwatch Hesalite 42mm 31.30.42.50.01.001 BOXES/PAPERS!

Omega - 124200 · $5,000
This 2024 Omega Speedmaster Moonwatch comes in a 42mm stainless steel case with a black dial and fixed stainless steel bezel. It features automatic movement, sapphire crystal, and water resistance up to 100 meters.

  • Condition: Pre-owned with typical cosmetic wear
  • Case diameter: 42mm
  • Band material: Stainless Steel
  • Water resistance depth rating: 100m
Posted at
Feb 3, 2025, 5:37 PM
Active
Omega Speedmaster Moonwatch 3861 - White - 310.30.42.50.04.001 ( new )

Omega Speedmaster Moonwatch 3861 - White - 310.30.42.50.04.001 ( new )

This is a brand new Omega Speedmaster Moonwatch Professional with a white dial and sapphire crystal on a stainless steel bracelet.

  • Condition: Brand new
  • Movement: Omega Master Chronometer Movement
  • Case size: 42mm
  • Material: Stainless Steel
Posted at
Feb 3, 2025, 3:21 PM
Active
Omega Speedmaster Moonwatch Sapphire - 3861 - 310.30.42.50.01.002 (new / 2025)

Omega Speedmaster Moonwatch Sapphire - 3861 - 310.30.42.50.01.002 (new / 2025)

This is a brand new Omega Speedmaster Moonwatch Professional, featuring a 42mm stainless steel case and an Omega Master Chronometer movement.

  • Condition: Brand new
  • Case material: stainless steel
  • Movement type: Omega Master Chronometer
Posted at
Feb 3, 2025, 3:20 PM
Active
2023 Omega Speedmaster Pro Moonwatch 42mm 310.30.42.50.01.002 Steel Black Dial

2023 Omega Speedmaster Pro Moonwatch 42mm 310.30.42.50.01.002 Steel Black Dial

This is a 2023 Omega Speedmaster Professional Moonwatch with a stainless steel case and black dial, measuring 8.0inch in diameter on the wrist.

  • Condition: Excellent
  • Material: Stainless Steel
  • Size: 40mm diameter
  • Warranty: International Warranty card dated 2023 and Existing Factory warranty
Posted at
Feb 3, 2025, 12:56 PM
Active
Omega Speedmaster. First Omega In Space. New model! 2024yr! 310.30.40.50.06.001

Omega Speedmaster. First Omega In Space. New model! 2024yr! 310.30.40.50.06.001

This Omega Speedmaster First Omega In Space is an updated tribute to the pioneering timepiece worn in space on October 3rd, 1962, and captures the same 2nd generation Speedmaster style in modern form.

  • Condition: Like New
  • Movement type: Manual-Winding
  • Dial color: Blue-Grey
  • Bezel material: Aluminum
Posted at
Feb 2, 2025, 10:31 PM
Active
Omega Speedmaster Racing - 44.25mm - Orange - 329.32.44.51.01.001 (excellent)

Omega Speedmaster Racing - 44.25mm - Orange - 329.32.44.51.01.001 (excellent)

This Omega Speedmaster Racing features a 44.25mm stainless steel case and a black and orange dial, with a Master Co-Axial movement.

  • Condition: Excellent
  • Case size: 44.25mm
  • Movement: Master Co-Axial 9900 Chronometer
Posted at
Feb 2, 2025, 3:43 PM
Active
1998 Omega Speedmaster MK40 Triple Date Ref. 3520.53 with Box

1998 Omega Speedmaster MK40 Triple Date Ref. 3520.53 with Box

Omega - 3520.53 · $2,950
The Omega Speedmaster MK40 Triple Date Ref. 3520.53 is a neo-vintage watch with a colorful dial, known as the 'HODINKEE Mark 40'. It's one of Omega's most complicated watches, featuring a beautiful and unique design.

  • Condition: Excellent (little to no signs of wear)
  • Movement: Automatic
  • Case width: 39mm
  • Strap length: 7.25"
Posted at
Feb 2, 2025, 12:10 PM
Active