Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink

Reference 310.20.42.50.99.001

Omega Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink

About this watch

The Omega Speedmaster Professional Moonwatch 310.20.42.50.99.001 is a stunning blend of tradition and innovation, featuring a unique Sedna Gold and pink finish. Its 42mm stainless steel case and Sedna Gold accents command attention, while the remarkable Omega caliber 3861 movement boasts a co-axial escapement, reducing friction for enhanced accuracy and longevity. Certified by METAS as a Master Chronometer, this watch can resist magnetic fields reaching an impressive 15,000 gauss. The sunburst pink finish adds sophistication, making it perfect for both casual and formal settings.
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Key Features

  • Omega caliber 3861 movement
  • 42mm stainless steel case
  • Sedna Gold accents
  • Co-axial escapement
  • Master Chronometer certified by METAS
  • 50m water resistance
  • Chronograph function

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink
Reference
310.20.42.50.99.001
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
42mm
Dial Color
Pink
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster Reduced - 3510.50 - AMAZING Patina - Bonus Omega Buckle on Strap - $2,650 Shipped

Omega Speedmaster Reduced - 3510.50 - AMAZING Patina - Bonus Omega Buckle on Strap - $2,650 Shipped

Omega - 3510.50 · $2,650
The Omega Speedmaster Reduced is a stylish and elegant watch with beautiful patina.

  • Patina: amazing
Posted at
May 27, 2026, 11:00 PM
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[WTS] Omega Speedmaster 3523.80 39mm - $1,950

Omega Speedmaster 3523.80 39mm - $1,950

Omega - 3523.80 · $1,950
Up for sale is my Omega Speedmaster 3523.80 39mm in great condition.

  • Condition: great condition for its age
  • Movement: automatic caliber Omega 1151
  • Bracelet size: 7-7.25 inch wrists
Posted at
May 27, 2026, 9:24 PM
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[WTS] 2024 Omega Speedmaster Professional Moonwatch White Dial 310.30.42.50.04.001 Full Set

2024 Omega Speedmaster Professional Moonwatch White Dial 310.30.42.50.04.001 Full Set

Omega - 310.30.42.50.04.001 · $7,615
2024 Omega Speedmaster Professional Moonwatch with a stainless steel case, 42mm diameter, and manual wind movement.

  • Condition: Very Nice Preowned with Some Small Light Scratches on the Case, Bracelet and Buckle
  • Case dimensions: 42mm diameter
  • Bezel material: Stainless Steel Black Bezel
  • Band type: Stainless Steel Bracelet with Micro Adjustment
Posted at
May 27, 2026, 8:06 PM
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[WTS] Omega Speedmaster Professional 3861 "Sapphire Sandwich" (Ref. 310.30.42.50.01.002) adjustable clasp

Omega Speedmaster Professional 3861 "Sapphire Sandwich" (Ref. 310.30.42.50.01.002) adjustable clasp

Omega - 310.30.42.50.01.002 · $5,900
The Omega Speedmaster Professional 3861 'Sapphire Sandwich' is a highly sought-after chronograph configuration that demands a physical relationship with its mechanical intimacy. The watch features a crisp, metallic ratcheting resonance from the Caliber 3861 and a massive edge-to-edge sapphire caseback offering a mesmerizing view of the movement.

  • Condition: Lightly worn, very sharp lines, flawless finishes, immaculate aluminum tachymeter bezel
  • Bracelet type: Stainless steel
  • Bracelet width tapering: 20mm -> 15mm
  • Movement function: Manual-wind
Posted at
May 27, 2026, 6:56 PM
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[WTS] Omega Speedmaster Co-axial Chronograph | Ref: 324.30.38.50.01.001 | w/ Box & Papers | $4200

Omega Speedmaster Co-axial Chronograph | Ref: 324.30.38.50.01.001 | w/ Box & Papers | $4200

Omega - 324.30.38.50.01.001 · $4,200
This Omega Speedmaster Co-axial Chronograph is a high-end watch that features a chronograph function, making it ideal for those who need to measure elapsed time.

  • Box: included
  • Papers: included
Posted at
May 27, 2026, 6:26 PM
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[WTS] Omega Speedmaster Chronoscope Co-Axial Master Chronometer Chronograph | Ref. 329.30.43.51.02.002 | w/ Box & Papers | $6300

Omega Speedmaster Chronoscope Co-Axial Master Chronometer Chronograph | Ref. 329.30.43.51.02.002 | w/ Box & Papers | $6300

Omega - 329.30.43.51.02.002 · $6,300
a Omega Speedmaster Chronoscope Co-Axial Master Chronometer Chronograph is listed for sale.

Posted at
May 27, 2026, 6:06 PM
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[WTS] Omega Speedmaster Professional 42MM White - Ref 310.30.42.50.04.001 (LIKE NEW 2025 COMPLETE SET W/ CASEBACK STICKER)

Omega Speedmaster Professional 42MM White - Ref 310.30.42.50.04.001 (LIKE NEW 2025 COMPLETE SET W/ CASEBACK STICKER)

Omega - 310.30.42.50.04.001 · $7,400
A 42MM Omega Speedmaster Professional White, in pristine condition with its original caseback sticker intact and dated warranty card from 2025.

  • Condition: like new
  • Case diameter: 42mm
  • Depth rating: 30m
Posted at
May 27, 2026, 4:18 PM
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[WTS] Omega Speedmaster Professional Sapphire - 310.30.42.50.01.002 - Full Kit - Fresh Service

Omega Speedmaster Professional Sapphire - 310.30.42.50.01.002 - Full Kit - Fresh Service

Omega - 310.30.42.50.01.002 · $6,595
The Omega Speedmaster Professional features a sapphire crystal front and display caseback, showcasing the Omega movement.

  • Condition: Near like-new, lightly pre-owned
  • Case size: 42mm
  • Water resistance: not specified
Posted at
May 27, 2026, 4:15 PM
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[WTS] Omega Speedmaster Reduced Reverse Panda 1993 Ref 3511.50

Omega Speedmaster Reduced Reverse Panda 1993 Ref 3511.50

Omega - 3511.50 · $1,950
A 1993 Omega Speedmaster Reduced sold as a pre-owned item, with the original box but no papers.

  • Condition: Used with damage to the bezel
  • Year of manufacture: 1993
  • Papers: No papers included
Posted at
May 27, 2026, 3:02 PM
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