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.
Buy Now on Jomashop
This is an affiliate link

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 Date 3511.50 Full Set $2,099

(Omega) Speedmaster Date 3511.50 Full Set $2,099

Omega - 3511.50 · $2,099
For sale is an Omega Speedmaster Date, reference 3511.50, a reduced variant made for the Japanese market. This automatic watch features a 39mm case and 18mm lugs.

  • Condition: Excellent external condition, running well internally
  • Case size: 39mm diameter
  • Lug-to-lug length: 45mm
  • Thickness: 13.8mm
Posted at
Apr 28, 2026, 8:18 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Reduced - Mother of Pearl - White Dial - Factory Strap

Omega Speedmaster Reduced - Mother of Pearl - White Dial - Factory Strap

Omega - Speedmaster Reduced · $2,350
A rare and unique Omega Speedmaster reduced model with a 39mm case, featuring a stunning Mother of Pearl dial.

  • Condition: Good condition for the age
  • Case size: 39mm
  • Strap type: Factory Omega leather strap
Posted at
Apr 28, 2026, 5:37 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Racing - 32630405001002

Omega Speedmaster Racing - 32630405001002

Omega - 32630405001002 · $2,999
This Omega Speedmaster Racing is in good condition, having been worn a handful of times. It features desk diving scratches on the clasp.

  • Condition: Pre-owned, minor scratches
  • Scratches location: Clasp
  • Shipping discussion possible: true
Posted at
Apr 28, 2026, 5:06 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Moonwatch Hesalite 1861 3570.50.00 ( excellent / 2007 / box and papers )

Omega Speedmaster Moonwatch Hesalite 1861 3570.50.00 ( excellent / 2007 / box and papers )

Omega - 3570.50.00 · $4,750
This Omega Speedmaster Moonwatch Professional Chronograph 1861 is a 42mm stainless steel watch with Hesalite crystal, reference # 3570.50.00.

  • Condition: Excellent condition
  • Case size: 42mm diameter
  • Movement: 1861 Omega Calibre
Posted at
Apr 28, 2026, 1:36 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Sapphire New 2026, $7500

Omega Speedmaster Sapphire New 2026, $7500

Omega - 310.30.42.50.01.002 · $7,500
This listing is for a brand new Omega Speedmaster Sapphire, featuring a reference number of 310.30.42.50.01.002 and coming with its original box and warranty.

  • Condition: Brand New Condition
  • Shipping Cost: $150 for USA
  • Payment Methods: Wire or Credit Card (+4.9% & 4 days clearance)
  • Warranty Year: 2026
Posted at
Apr 28, 2026, 10:35 AM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Moonshine Green Dial 2023, $29k+✈️

Omega Speedmaster Moonshine Green Dial 2023, $29k+✈️

Omega - 310.60.42.50.10.001 · $29,000
2023 Omega Speedmaster Moonshine Green Dial, with a layer of aftermarket watch protection film on.

  • Condition: Preowned Condition
Posted at
Apr 28, 2026, 10:31 AM
Active
View listing on r/WatchExchange
[WTS][US] Omega Speedmaster First Omega in Space - FOiS - 310.30.40.50.06.001 - Full Set

[US] Omega Speedmaster First Omega in Space - FOiS - 310.30.40.50.06.001 - Full Set

Omega - 310.30.40.50.06.001 · $7,525
Up for sale is an Omega Speedmaster First Omega in Space - FOiS - Full Set, which functions perfectly mechanically without issue.

  • Condition: Fantastic with few hairlines
  • Case Condition: few hairlines on case, clasp, and bracelet
  • Box Status: Full Set
Posted at
Apr 28, 2026, 8:44 AM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Moonwatch (Reverse Panda) – Full Kit

Omega Speedmaster Moonwatch (Reverse Panda) – Full Kit

Omega - Speedmaster Moonwatch (Reverse Panda) · $10,250
A classic Omega Speedmaster Moonwatch with an updated Co-Axial Master Chronometer movement, available as a full set including box, papers, and cards.

  • Condition: Amazing, slight mark on the case
  • Size: 40mm diameter
  • Movement: Cal. 3861
  • Power reserve: ~50 hours
Posted at
Apr 28, 2026, 1:33 AM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Pro White Dial

Omega Speedmaster Pro White Dial

Omega - 310.32.42.50.04.001 · $6,999
A beautiful Omega Speedmaster Pro with a white dial is up for sale, featuring a manual wind movement and coming as a full kit with card dated 09/2025.

  • Condition: great condition with minimal wear on the case
  • Size: 42mm diameter
  • Movement: 3861 manual wind movement
Posted at
Apr 27, 2026, 9:28 PM
Active
View listing on r/WatchExchange