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] Brand New Omega Speedmaster Moonwatch "Sapphire Sandwich" [ Ref. 310.30.42.50.01.002 ]

Brand New Omega Speedmaster Moonwatch "Sapphire Sandwich" [ Ref. 310.30.42.50.01.002 ]

This listing is for a brand new Omega Speedmaster Moonwatch Professional in the 'Sapphire Sandwich' style. It comes as a full set with various accessories.

  • Condition: Brand new, unworn
  • Case size: 42mm diameter
Posted at
Apr 29, 2026, 3:46 PM
Active
[WTS] Omega Speedmaster '57 - current gen - warranty till Apr 2027 - $5.5K

Omega Speedmaster '57 - current gen - warranty till Apr 2027 - $5.5K

A current generation Omega Speedmaster '57 with a April 29, 2022 date, featuring a beautiful wooden box and manual.

  • Condition: Very good, with scratches and hairlines
  • Warranty Expiration: April 2027
  • Shipping Options: insured shipping available for additional $100
  • Bracelet Size: 17cm
Posted at
Apr 29, 2026, 3:40 PM
Active
[WTS] Omega OEM deployant 16mm buckle width length (fits 20mm speedmaster straps)

Omega OEM deployant 16mm buckle width length (fits 20mm speedmaster straps)

A stainless steel Omega OEM deployant buckle for watches with a 20mm strap width.

  • Condition: no condition found
  • Buckle width: 16mm
  • Compatible with straps: 20mm speedmaster straps
  • Retail price: $310
Posted at
Apr 29, 2026, 2:42 PM
Active
[WTS] Omega Speedmaster Date 3513.50

Omega Speedmaster Date 3513.50

  • Model name: Speedmaster Date
Posted at
Apr 29, 2026, 2:36 PM
Active
[WTS] 2026 NEW Omega Speedmaster Reverse Panda 310.30.42.50.01.004 Unworn

2026 NEW Omega Speedmaster Reverse Panda 310.30.42.50.01.004 Unworn

This new Omega Speedmaster Reverse Panda is an unworn timepiece that comes with its full set, including the box and paperwork.

  • Condition: Like New
  • Year Of Manufacture: 2026
  • Material: Stainless Steel
  • Bracelet Material: Stainless Steel
Posted at
Apr 29, 2026, 2:30 PM
Active
[WTS] Omega Speedmaster Reduced - 3510.50

Omega Speedmaster Reduced - 3510.50

Omega - 3510.50 · $2,495
A Omega Speedmaster Reduced in good pre-owned condition, featuring a 39mm case size and chronograph function that will require service.

  • Condition: good pre-owned condition
  • Size: 39mm diameter
Posted at
Apr 29, 2026, 1:01 PM
Active
[WTS] Omega Speedmaster 3519.50.00 “Schumacher World Champion 2001” LE — Racing Dial — $2,599 Shipped (Tariff Covered)

Omega Speedmaster 3519.50.00 “Schumacher World Champion 2001” LE — Racing Dial — $2,599 Shipped (Tariff Covered)

Omega - 3519.50.00 · $2,599
This Omega Speedmaster ref. 3519.50.00 'Schumacher World Champion 2001' Limited Edition features a distinctive racing dial and is powered by an automatic chronograph movement.

  • Condition: Honest condition with light signs of use
  • Case size: 39mm
  • Lug-to-lug: 44mm
  • Thickness: 14mm
Posted at
Apr 29, 2026, 12:39 PM
Active
[WTS] Omega Speedmaster Professional Sapphire - 310.30.42.50.01.002 - Full Kit - Price Reduced!

Omega Speedmaster Professional Sapphire - 310.30.42.50.01.002 - Full Kit - Price Reduced!

This Omega Speedmaster Professional features a sapphire crystal front and display caseback, showcasing the stunning omega movement.

  • Condition: near like-new condition
  • Size: 42mm diameter
  • Kit contents: full kit with original double box, all 3 omega cards
Posted at
Apr 29, 2026, 12:25 PM
Active
[WTS] Omega Speedmaster Date 40mm Ref. 3210.50 | Excellent Condition | Original Ref. 1564/975 Bracelet | Caliber 1164 Chronometer | Sapphire Crystal | All Original | $2200 (SERVICED)

Omega Speedmaster Date 40mm Ref. 3210.50 | Excellent Condition | Original Ref. 1564/975 Bracelet | Caliber 1164 Chronometer | Sapphire Crystal | All Original | $2200 (SERVICED)

Omega - 3210.50 · $2,200
The Omega Speedmaster Date Ref. 3210.50 is a modern take on the classic moonwatch, featuring a 40mm case size and a deep black dial with a balanced triple-register layout.

  • Condition: Excellent Condition with light, honest signs of wear
  • Case size: 40mm
  • Thickness: ~15mm
  • Lug width: 19mm
Posted at
Apr 29, 2026, 9:57 AM
Active