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

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This Omega Speedmaster CK2998 Limited Edition 'Blue Panda' is a modern classic with a striking design. It features an opaline silver dial with blue subdials and a manual winding OMEGA calibre 1861. The watch comes in its complete set, including the outer box, inner box, instruction manual, card sleeve, international warranty card, and pictograms card.

  • Condition: Excellent, barely worn
  • Case size: 40mm
  • Movement caliber: 1861
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Aug 31, 2025, 6:08 PM
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A vintage Omega Speedmaster Mark 40 Triple Calendar watch in good condition, featuring an automatic movement and all functions working.

  • Condition: Minimal signs of use
  • Case Size: 39mm
  • Movement Condition: fresh
  • Lug To Lug: 45mm
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Aug 31, 2025, 5:33 PM
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The listing is about an Omega Speedmaster Professional "Replica" 3594.50 – Broad Arrow Reissue.

  • Movement: Calibre 1861
  • Bracelet: Leather strap with metal buckle
Posted at
Aug 31, 2025, 3:37 PM
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[WTS] Omega Speedmaster Moonwatch Professional Hesalite Black Dial 8/21 Ref: 310.30.42.50.01.001 $4899.00

Omega Speedmaster Moonwatch Professional Hesalite Black Dial 8/21 Ref: 310.30.42.50.01.001 $4899.00

This Omega Speedmaster Moonwatch Professional features a black lacquered dial, manual winding mechanism, and 50M water resistance. It's a beautiful timepiece with a domed Hesalite crystal and closed case back.

  • Condition: Great pre-owned condition, some hairlines on case, bracelet and clasp.
  • Size: 42mm
  • Movement: 3861
  • Water Resistance: 50m
Posted at
Aug 31, 2025, 12:45 PM
Active
[WTS] Omega Speedmaster. 39mm. Automatic.  $1595 !!

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Omega · $1,595
A 39mm automatic Omega Speedmaster with a nice blue dial is being sold. More photos are available on the seller's dropbox links.

  • Diameter: 39mm
  • Movement: automatic
Posted at
Aug 31, 2025, 11:18 AM
Active