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

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
Omega Speedmaster Professional Moon Watch Chronograph 3572.50

Omega Speedmaster Professional Moon Watch Chronograph 3572.50

Omega - 3572.50 · $4,030
This Omega Speedmaster Professional Moon Watch Chronograph is a mechanical manual watch with a stainless steel case, chronograph function, and size of 42mm.

  • Condition: 95%
  • Case material: stainless steel
  • Movement type: mechanical manual (1863)
  • Size: 42mm
Posted at
Feb 2, 2025, 6:28 AM
Active
2022 Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 Sapphire

2022 Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 Sapphire

2022 Omega Speedmaster Professional Moonwatch in excellent condition with a full size bracelet.

  • Condition: excellent, minor scratches on case and bracelet
  • Bracelet type: full size
  • Shipping method: FedEx Standard Overnight
Posted at
Feb 1, 2025, 6:08 PM
Active
Mint Omega SNOOPY Speedmaster 50th Anniversary Oct 2024 FULL SET

Mint Omega SNOOPY Speedmaster 50th Anniversary Oct 2024 FULL SET

Omega - 310.32.42.50.02.001 · $14,795
A 50th Anniversary Speedmaster Moonwatch with a Silver Snoopy Award, featuring a silver dial with blue subdials and a stainless steel case on a blue nylon fabric strap.

  • Condition: Mint
  • Case material: Stainless Steel
  • Band material: Blue nylon fabric
  • Strap type: Tang buckle
Posted at
Feb 1, 2025, 12:17 PM
Active
Omega Speedmaster Professional Moonphase

Omega Speedmaster Professional Moonphase

Omega - 3575.20 · $5,450
Up for sale is an Omega Speedmaster Professional Moonphase reference 3575.20, featuring date, chronograph, tachymeter and moonphase functions in a 42mm case with 18k white gold bezel.

  • Condition: excellent
  • Case size: 42mm
  • Movement: 1866 manual wind movement
  • Production years: 2000-2005
Posted at
Feb 1, 2025, 9:36 AM
Active