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.
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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 Professional Moonwatch – 2021 – Hesalite – Excellent

Omega Speedmaster Professional Moonwatch – 2021 – Hesalite – Excellent

Omega - 310.30.42.50.01.001 · $5,150
This is the new generation reference 3861, featuring the updated Master Chronometer movement and classic hesalite crystal, keeping the traditional Moonwatch look.

  • Condition: Excellent
  • Case Size: 42mm diameter
  • Movement: Manual Wind (Omega Caliber 3861)
  • Crystal: Hesalite
Posted at
Mar 12, 2026, 4:12 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Reduced Two Tone - 39mm - 175.0033 - $2,750 Shipped

Omega Speedmaster Reduced Two Tone - 39mm - 175.0033 - $2,750 Shipped

Omega - 175.0033 · $2,750
For sale is a Beautiful Omega Speedmaster Reduced, this is the white dial version.

  • Condition: Great vintage condition, light hairlines on bezel and case
  • Case size: 39mm
  • Material: Two Tone
  • Movement status: Running
Posted at
Mar 12, 2026, 3:18 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.01.001 – Full Set – $3,800 + shipping

Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.01.001 – Full Set – $3,800 + shipping

Omega - 324.30.38.50.01.001 · $3,800
The Omega Speedmaster 38 Co-Axial Chronograph features a black dial on the stainless steel bracelet, with typical hairline marks on the bracelet and a small scratch on the clasp. The crystal and dial are clean. This watch comes in its full set.

  • Condition: great condition with light wear
  • Bracelet size: not specified
  • Crystal type: not specified
  • Dial color: black
Posted at
Mar 12, 2026, 12:19 PM
Active
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[WTS] Omega Speedmaster Professional Moonwatch Sapphire 310.30.42.50.01.002 with Box & Manuals

Omega Speedmaster Professional Moonwatch Sapphire 310.30.42.50.01.002 with Box & Manuals

Omega - 310.30.42.50.01.002 · $6,150
This Omega Speedmaster Professional Moonwatch features a stainless steel case, black bezel, and manual wind mechanical movement.

  • Condition: Nice Preowned Condition with Some Light Scratches on the Case, Bracelet and Buckle
  • Case dimensions: 42mm diameter
  • Bezel material: Stainless Steel
  • Dial color: Black
Posted at
Mar 11, 2026, 7:04 PM
Active
View listing on r/WatchExchange
[WTS] OMEGA X SWATCH Speedmaster Uranus

OMEGA X SWATCH Speedmaster Uranus

Omega · $350
A Speedmaster watch, purchased on vacation in Thessaloniki Greece, that has been worn less than 5 times and is not suited for the seller's lifestyle.

  • Condition: Very good
Posted at
Mar 11, 2026, 4:20 PM
Active
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[WTS] OMEGA X SWATCH Speedmaster Pluto

OMEGA X SWATCH Speedmaster Pluto

Omega - Speedmaster · $350
  • Condition: Excellent, possibly only worn once
  • Origin: Purchased in Paris at the Le Marais boutique
Posted at
Mar 11, 2026, 4:16 PM
Active
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[WTS] Omega Speedmaster Reduced 3510.50 39mm Watch Only $2,500

Omega Speedmaster Reduced 3510.50 39mm Watch Only $2,500

Omega - 3510.50 · $2,500
A Speedmaster Reduced from Omega, a watch only sale with the bracelet fitting about 18cm wrists.

  • Shipping origin: Singapore
  • Shipping to usa: 4-5 business days
  • Payment methods: Wise, Revolut, Wire Transfer, Crypto, Venmo
Posted at
Mar 11, 2026, 5:20 AM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Professional Moonwatch (Hesalite)

Omega Speedmaster Professional Moonwatch (Hesalite)

Omega - 310.30.42.50.01.001 · $5,750
This modern Omega Speedmaster Professional Moonwatch features Master Chronometer technology, a stainless steel case, and a black anodized aluminum tachymeter bezel.

  • Condition: Excellent
  • Case size: 42mm
  • Movement type: Co-Axial Master Chronometer Caliber 3861
  • Power reserve: 50 hours
Posted at
Mar 11, 2026, 12:04 AM
Active
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[WTS] Omega Speedmaster Automatic Day-Date 3520.50.00 MK 40 | Great Condition (Serviced) | $2450

Omega Speedmaster Automatic Day-Date 3520.50.00 MK 40 | Great Condition (Serviced) | $2450

Omega - 3520.50.00 MK 40 · $2,450
The Omega Speedmaster Automatic Day-Date features a stainless steel case with a twisted-lug design and domed sapphire crystal, powered by the modified Valjoux 7751 automatic chronograph movement.

  • Condition: Great condition, serviced
  • Movement: Omega 1151 (modified Valjoux 7751)
  • Case dimensions: 39mm diameter, 44.75mm lug-to-lug, 14mm thick
  • Lug width: 18mm
Posted at
Mar 10, 2026, 10:34 PM
Active
View listing on r/WatchExchange