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] 2024  OMEGA SPEEDMASTER WHITE DIAL
310.30.42.50.04.001 $7599

2024 OMEGA SPEEDMASTER WHITE DIAL 310.30.42.50.04.001 $7599

2024 OMEGA SPEEDMASTER WHITE DIAL FOR SALE Additional Details:

  • Year: 2024
Posted at
Mar 15, 2026, 4:38 PM
Active
[WTS] Omega Speedmaster Professional Hesalite I 310.30.42.50.01.001 | Dated 03/2023 | $5,399

Omega Speedmaster Professional Hesalite I 310.30.42.50.01.001 | Dated 03/2023 | $5,399

This Omega Speedmaster Professional Hesalite I is a manual wind, mechanical watch with a stainless steel case and black dial, featuring hesalite crystal.

  • Condition: Preowned, Very Good Condition
  • Case Material: Stainless Steel
  • Band Material: Stainless Steel
  • Movement Type: Manual Wind, Mechanical
Posted at
Mar 15, 2026, 3:45 PM
Active
[WTS] Omega Speedmaster Japan Edition 3211.50.00

Omega Speedmaster Japan Edition 3211.50.00

Omega - 3211.50.00 · $2,599
This Omega Speedmaster Japan Edition is in great pre-owned condition with limited signs of wear throughout.

  • Condition: pre-owned with limited signs of wear
  • Case Size: 40mm diameter
Posted at
Mar 15, 2026, 1:58 PM
Active
[WTS] Omega Speedmaster GSOTM Meterorite, Full Set w/ Extra Strap

Omega Speedmaster GSOTM Meterorite, Full Set w/ Extra Strap

Omega - 311.63.44.51.99.001 · $12,000
A mint condition Omega Speedmaster Grey Side of the Moon Meteorite, a limited edition timepiece featuring a solid Sedna gold bezel and ceramic case, available with an original gray alligator leather strap as well as an additional brand new black alligator leather strap.

  • Condition: Excellent
  • Case size: 44.25mm
  • Movement: Automatic
  • Case material: Ceramic
Posted at
Mar 15, 2026, 1:18 PM
Active
[WTS] Omega Speedmaster Date 40 Box Papers Excellent Condition Blue Dial

Omega Speedmaster Date 40 Box Papers Excellent Condition Blue Dial

Omega - 3212.80.00 · $3,198
The Omega Speedmaster Date Chronograph is one of OMEGA's most iconic timepieces, featuring a date window and iconic Seamster logo on the caseback.

  • Condition: Excellent Condition
  • Case Material: Steel
  • Bracelet Material: Bracelet
  • Box Papers: Yes
Posted at
Mar 15, 2026, 1:14 PM
Active
[WTS] Omega Speedmaster Silver 40 Box Papers

Omega Speedmaster Silver 40 Box Papers

Omega - 3212.80.00 · $2,999
The Omega Speedmaster is a chronograph date watch with small seconds and tachymeter, featuring an iconic design.

  • Condition: Pre-Owned with minor scratches
  • Case Material: Steel
  • Bracelet Material: Bracelet
  • Dimensions: 40 mm diameter
Posted at
Mar 15, 2026, 1:05 PM
Active
[WTS] Omega Speedmaster. 39mm. Mother of Pearl Dial. Clean. OEM Strap/Deployant Clasp..

Omega Speedmaster. 39mm. Mother of Pearl Dial. Clean. OEM Strap/Deployant Clasp..

Omega - Speedmaster · $2,350
This Omega Speedmaster features a 39mm case and mother of pearl dial.

  • Condition: Clean
  • Case Size: 39mm
  • Strap Type: OEM Strap/Deployant Clasp
Posted at
Mar 15, 2026, 11:32 AM
Active
[WTS] 2022 Omega Speedmaster Moonwatch Professional – 310.30.42.50.01.001 - $5899 Shipped

2022 Omega Speedmaster Moonwatch Professional – 310.30.42.50.01.001 - $5899 Shipped

For sale is a 2022 Omega Speedmaster Moonwatch Professional in excellent condition, showing light signs of normal wear and running properly.

  • Condition: Excellent overall condition with light signs of normal wear only
  • Case size: 42mm
  • Movement type: Manual wind chronograph
  • Crystal material: Hesalite
Posted at
Mar 15, 2026, 2:41 AM
Active
[WTS] Omega Speedmaster Reduced 39mm Ref. 175.0032 Cal 1140 TRITIUM PATINA

Omega Speedmaster Reduced 39mm Ref. 175.0032 Cal 1140 TRITIUM PATINA

Omega - 175.0032 · $2,550
This Omega Speedmaster Reduced features a beautiful tritium patina on its dial, giving it an authentic vintage character.

  • Condition: Honest signs of use consistent with its age, scratches on case and bracelet
  • Movement: Omega Caliber 1140 Automatic (46 jewels)
  • Case Size: 39mm
  • Caseback: Solid Omega press on caseback
Posted at
Mar 15, 2026, 1:38 AM
Active