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 Date ref. 3212.80.00 40mm | Great Condition (with Box, Booklet, Card & Serviced) | $2800

Omega Speedmaster Date ref. 3212.80.00 40mm | Great Condition (with Box, Booklet, Card & Serviced) | $2800

Omega - 3212.80.00 · $2,860
The Omega Speedmaster Date ref. 3212.80.00 is a versatile watch that blends classic chronograph functionality with everyday wearability. It features a deep blue dial, a tri-compax layout, and a date window at 3 o'clock. The watch also has a scratch-resistant sapphire crystal and a stainless steel bracelet.

  • Condition: Great condition
  • Case size: 40mm
  • Movement: Omega Calibre 1164 (Valjoux 7750 architecture)
  • Power reserve: 44 hours
Posted at
May 2, 2026, 11:41 PM
Active
[WTS] IF BLADERUNNER & A SPEEDY HAD A BABY! Rare Vintage Omega Speedmaster Teutonic Ghost Gray Bead-Blasted Ref 145.0044

IF BLADERUNNER & A SPEEDY HAD A BABY! Rare Vintage Omega Speedmaster Teutonic Ghost Gray Bead-Blasted Ref 145.0044

Omega - 145.0044 · $2,795
A rare vintage Omega Speedmaster Teutonic ref 145.0044 with a unique gray dial and bead-blasted case, featuring an integrated bracelet and manual wound cal 861 movement.

  • Condition: Pre-owned, some wear and scratches
  • Dial color: Gray
  • Case size: 42MM diameter
  • Bracelet type: Original Omega integrated bracelet
Posted at
May 2, 2026, 10:58 PM
Active
[WTS] Omega Dark Side Of The Moon Speedmaster Ceramic "Dark Vader" 310.92.44.51.01.001

Omega Dark Side Of The Moon Speedmaster Ceramic "Dark Vader" 310.92.44.51.01.001

Omega - 310.92.44.51.01.001 · $13,650
This Omega Speedmaster Dark Side of the Moon 'Dark Vader' combines a slim manual wind case with a matte finished grained dial and striking red lacquered chrono seconds hand.

  • Condition: Excellent (mint condition)
  • Calibre: OMEGA 9908 Black Edition
  • Power reserve: 60 hours
  • Crystal type: scratch-resistant sapphire crystal with anti-reflective treatment on both sides
Posted at
May 2, 2026, 9:14 PM
Active
[WTS] Omega Speedmaster Professional Hesalite. Full Set.

Omega Speedmaster Professional Hesalite. Full Set.

Omega - 3861 · $5,500
The Omega Speedmaster Professional Hesalite is a chronometer that comes in very good condition. It has been used occasionally and keeps excellent time. The watch includes the full set of original accessories.

  • Condition: very good
  • Warranty Cards: 2 sets (dated 3/6/2021)
  • Originality: full set
  • Case Condition: minor scratches
Posted at
May 2, 2026, 7:19 PM
Active
[WTS] Omega Speedmaster Chrono Blue Dial 43mm - 329.30.43.51.03.001 Full Set - Like New Condition - Houston, TX 🔥💰6,297💰🔥 + 🏷️

Omega Speedmaster Chrono Blue Dial 43mm - 329.30.43.51.03.001 Full Set - Like New Condition - Houston, TX 🔥💰6,297💰🔥 + 🏷️

The Omega Speedmaster Chronoscope is a stylish and functional wristwatch designed for unisex adults with a blue dial, mechanical manual movement, water resistance up to 50 meters, and chronometer function.

  • Condition: Like new
  • Case Size: 43mm
  • Water Resistance: 50m
  • Movement: Mechanical manual movement
Posted at
May 2, 2026, 5:10 PM
Active
[WTS] Omega Speedmaster Moonwatch Sapphire Sandwich (310.30.42.50.01.002) - $5950

Omega Speedmaster Moonwatch Sapphire Sandwich (310.30.42.50.01.002) - $5950

A Omega Speedmaster Moonwatch Sapphire Sandwich, a high-quality timepiece featuring a sapphire crystal sandwich case.

  • Condition: Overall excellent condition with light marks on the case, bracelet, clasp, and caseback
  • Water Resistance: meters deep
  • Movement Type: Master Chronometer
  • Box And Papers: full set
Posted at
May 2, 2026, 4:47 PM
Active
[WTS] 2021 Omega Speedmaster Racing 329.32.44.51.01.001 Orange Full Set - $6,495

2021 Omega Speedmaster Racing 329.32.44.51.01.001 Orange Full Set - $6,495

This Omega Speedmaster Racing is a 2021 model with an orange dial and features a sporty design.

  • Condition: Excellent condition
  • Year: 2021
  • Contents: Watch, Inner & Outer Box, Card Holder, International Warranty Card, Pictograms Card, Master Chronometer Card, Instructions Manual
Posted at
May 2, 2026, 12:43 PM
Active
[WTS] Omega Speedmaster Moonphase 304.33.44.52.01.001

Omega Speedmaster Moonphase 304.33.44.52.01.001

This Omega Speedmaster features a moonphase complication and automatic co-axial movement 9904, housed in a 44.25mm case with original strap.

  • Condition: Good pre-owned condition
  • Size: 44.25mm diameter
  • Movement: Automatic (Co-Axial 9904)
  • Strap: Original leather strap
Posted at
May 2, 2026, 10:29 AM
Active
[WTS] *REPOST* OMEGA SPEEDMASTER DATE 3513.50 WITH PAPERS

*REPOST* OMEGA SPEEDMASTER DATE 3513.50 WITH PAPERS

OMEGA - 3513.50 · $1,750
A lightly worn Omega Speedmaster Date with a clean dial and crystal, accurate timekeeping.

  • Condition: lightly worn
  • Box: no box
  • Papers: yes
  • Crystal condition: clean
Posted at
May 2, 2026, 9:57 AM
Active