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 Apollo 11 ($10,499)

Omega Speedmaster Apollo 11 ($10,499)

Omega - 310.20.42.50.01.001 · $10,499
This is a special edition Omega Speedmaster Apollo 11 watch.

  • Price: $10,499 + label
Posted at
Dec 17, 2025, 2:43 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Coin Thingy ($5,999)

Omega Speedmaster Coin Thingy ($5,999)

Omega · $5,999
A listing with little information about the Omega Speedmaster Coin Thingy.

  • Price: 5999
Posted at
Dec 17, 2025, 2:39 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster 'Moonwatch' Sapphire Sandwich - Co-Axial Calibre 3861 - 310.30.42.50.01.002 Full kit (Box & Papers)

Omega Speedmaster 'Moonwatch' Sapphire Sandwich - Co-Axial Calibre 3861 - 310.30.42.50.01.002 Full kit (Box & Papers)

Omega - 3861 · $5,800
For sale is my Omega Speedmaster Moonwatch 3861 (sapphire sandwich) from 2022, a master chronometer certified watch that has been collecting dust due to not being worn in rotation.

  • Condition: good + with light wear on the clasp
  • Movement: Co-Axial Calibre 3861
  • Water Resistance: unknown
  • Size: 42mm diameter
Posted at
Dec 17, 2025, 12:02 PM
Active
View listing on r/WatchExchange
[WTS][US] Omega Speedmaster Chronoscope - White Panda Dial - 43mm - 329.30.43.51.02.002

[US] Omega Speedmaster Chronoscope - White Panda Dial - 43mm - 329.30.43.51.02.002

Omega - 329.30.43.51.02.002 · $5,125
This Omega Speedmaster Chronoscope features a white panda dial and a 43mm case size.

  • Condition: Fantastic condition
  • Case Size: 43mm
Posted at
Dec 17, 2025, 8:42 AM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Moonphase Master Chronometer – Blue Dial – Full Set (2023)

Omega Speedmaster Moonphase Master Chronometer – Blue Dial – Full Set (2023)

Omega - 304.33.44.52.03.001 · $7,150
This is a 2023 Omega Speedmaster Moonphase Master Chronometer with a blue dial, blue ceramic bezel, and complete set of accessories. It features a 44.25mm steel case, Calibre 9904 movement, sapphire crystal front and back, 60h power reserve, 100m water resistance, and moonphase display.

  • Condition: very good with light surface wear on case/clasp
  • Case size: 44.25mm
  • Water resistance: 100m
  • Crystal type: Sapphire
Posted at
Dec 17, 2025, 12:46 AM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Spacemaster Z-33 (only full kit on titanium bracelet for sale in the world!) $4500

Omega Speedmaster Spacemaster Z-33 (only full kit on titanium bracelet for sale in the world!) $4500

Omega - Spacemaster Z-33 · $4,500
The Omega Speedmaster Spacemaster Z-33 is a multifunction quartz watch inspired by the 'Pilot line' with features such as an alarm, chronograph, perpetual calendar, and two-time zone function.

  • Condition: Overall normal for age with scratches on titanium bracelet and minor blemishes on box
  • Water resistance depth: 30 meters
  • Case size: 43mm diameter
Posted at
Dec 16, 2025, 11:15 PM
Active
View listing on r/WatchExchange
[WTS] 2021 Omega Speedmaster Professional Sapphire Sandwich

2021 Omega Speedmaster Professional Sapphire Sandwich

Omega - 310.30.42.50.01.002 · $6,100
A 2021 Omega Speedmaster Professional 'Sapphire Sandwich' in excellent condition, featuring a 42mm steel case with a sapphire back and manual winding movement.

  • Condition: Pre-owned, cosmetic condition: 8/10
  • Movement: OMG Calibre 3861 (manual winding)
  • Power reserve: approximately 50 hours
  • Case material: Steel front, sapphire back
Posted at
Dec 16, 2025, 11:13 PM
Active
View listing on r/WatchExchange
[wts] 🔥🔥 Omega Speedmaster Professional “Moonwatch”🔥🔥 Priced to sell!!

🔥🔥 Omega Speedmaster Professional “Moonwatch”🔥🔥 Priced to sell!!

Omega - 3570.5 · $3,500
This Omega Speedmaster Professional “Moonwatch” is one of the seller's favorite watches, featuring a 42mm case and reference number 3570.5.

  • Condition: Minimal wear throughout, may contain marks on crystal under heavy magnification
  • Case size: 42mm diameter
Posted at
Dec 16, 2025, 9:53 PM
Active
View listing on r/WatchExchange
[WTS] 2014 Omega Speedmaster 57

2014 Omega Speedmaster 57

Omega - Speedmaster 57 · $3,950
This Omega Speedmaster 57 features a 41.5mm automatic movement, caliber 9300.

  • Movement: caliber 9300 (column wheel vertical clutch)
  • Case size: 41.5mm
Posted at
Dec 16, 2025, 9:35 PM
Active
View listing on r/WatchExchange