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

Reference 310.20.42.50.99.001

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 Professional Moonwatch Sapphire 310.30.42.50.01.002 — Full Set — Micro-Adjust Clasp

OMEGA Speedmaster Professional Moonwatch Sapphire 310.30.42.50.01.002 — Full Set — Micro-Adjust Clasp

This Omega Speedmaster Professional Moonwatch features a black dial, sapphire crystal, and exhibition caseback showcasing the Omega Caliber 3861 Master Chronometer movement.

  • Condition: Excellent pre-owned condition
  • Case Size: 42mm diameter
  • Dial Color: Black
  • Crystal Type: Sapphire (Front & Exhibition Caseback)
Posted at
May 2, 2026, 4:31 AM
Active
[WTS] Omega Speedmaster Ref 3510.12 Schumacher Yellow Dial – Not Your Average Speedy

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Omega - 3510.12 · $2,850
This Omega Speedmaster Ref 3510.12 Schumacher Yellow Dial is a bold take on the classic Speedmaster with a vibrant yellow dial and compact automatic chronograph case.

  • Condition: Pre-owned, recently polished and serviced
  • Case size: 39mm diameter
  • Crystal type: Hesalite Crystal
  • Movement: Automatic chronograph movement (3220)
Posted at
May 1, 2026, 8:12 PM
Active
[WTS] OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥

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OMEGA - 311.92.44.30.01.001 · $10,000
The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 commemorates the 50th anniversary of the Apollo 8 mission, featuring a black ceramic case and a skeletonized dial representing the lunar surface.

  • Condition: UNWORN
  • Case material: black ceramic
  • Diameter: 44.25mm
  • Movement: Calibre 1869
Posted at
May 1, 2026, 8:11 PM
Active
[WTS] Omega Speedmaster Racing 40mm Steel Reverse Panda Dial 326.30.40.50.01.002 Box & Manual

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This Omega Speedmaster Racing features a stainless steel case, black reverse panda dial, and automatic mechanical movement.

  • Condition: Preowned with scratches on the case, bracelet and buckle
  • Case material: Stainless Steel
  • Bezel material: Stainless Steel
  • Dial type: Reverse Panda Dial
Posted at
May 1, 2026, 7:54 PM
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[WTS] Omega Speedmaster Broadarrow. Strong Lume.

Omega Speedmaster Broadarrow. Strong Lume.

A vintage Omega Speedmaster Broadarrow with strong lume, available for sale.

  • Condition: Runs well
  • Lume: strong
  • Shipping: Fedex with insurance
Posted at
May 1, 2026, 6:07 PM
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[WTS] Omega Speedmaster Reduced "Michael Schumacher" Limited Edition, 3517.30.00. Card Included. Collector's watch. Clean..

Omega Speedmaster Reduced "Michael Schumacher" Limited Edition, 3517.30.00. Card Included. Collector's watch. Clean..

Omega - 3517.30.00 · $3,495
A collector's Omega Speedmaster Reduced 'Michael Schumacher' Limited Edition, in good condition with a card included.

  • Condition: Clean
  • Shipping method: Fedex with insurance
  • Location: NJ USA
Posted at
May 1, 2026, 6:01 PM
Active
[WTS] OMEGA Speedmaster Professional Sapphire Sandwich 3861 Latest Model on Forstner Bullet - Watch Only - $5400 shipped CONUS

OMEGA Speedmaster Professional Sapphire Sandwich 3861 Latest Model on Forstner Bullet - Watch Only - $5400 shipped CONUS

The Omega Speedmaster Professional Sapphire Sandwich 3861 is a latest model watch sold as watch only, with shipping included to CONUS.

Posted at
May 1, 2026, 5:38 PM
Active
[WTS] Omega Speedmaster. Sapphire Sandwich. Box, Cards.

Omega Speedmaster. Sapphire Sandwich. Box, Cards.

Omega - Speedmaster · $6,150
A Omega Speedmaster sapphire sandwich watch with box and cards is being sold.

  • Location: NJ USA
Posted at
May 1, 2026, 4:47 PM
Active
[WTS] Omega Speedmaster 40 3211.31

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Omega - 3211.31 · $2,175
A used Omega Speedmaster 40mm model 3211.31, featuring a minor scratch on the crystal.

  • Condition: Minor scratch on crystal
  • Bracelet length: 7 inches
Posted at
May 1, 2026, 3:33 PM
Active