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 Professional Sapphire Sandwich – Cal. 1863 – New OEM Omega 3861 Bracelet With Quick Adjust Clasp – Spiralwinder Dot Over 90 Ceramic Bezel](https://preview.redd.it/eibhfok1wxdg1.jpg?width=640&crop=smart&auto=webp&s=c3e3244a70aa011b8b4f8ec3dd689f0665c6ea9a)
Omega Speedmaster Professional Sapphire Sandwich – Cal. 1863 – New OEM Omega 3861 Bracelet With Quick Adjust Clasp – Spiralwinder Dot Over 90 Ceramic Bezel
This Omega Speedmaster Professional Sapphire Sandwich is powered by the highly regarded caliber 1863 and features a Spiralwinder Ceramic DON tachymètre bezel. The watch has been upgraded with a new OEM 3861 bracelet installed at the Omega Boutique.
- Condition: Excellent
- Movement: Cal. 1863
- Crystal: Sapphire front & back
- Bezel: Spiralwinder Ceramic DON (Dot Over Ninety) tachymètre bezel
![[WTS] OMEGA Speedmaster 🌘🌑“Dark Side of the Moon”Co-Axial Master Chronometer Chronograph|Ref. 310.92.44.51.01.001| 2025 | Full Set in Like New Condition](https://preview.redd.it/wdbhc2mdpxdg1.jpg?width=640&crop=smart&auto=webp&s=a1e550ea35c47efb184141a12e9b1fc8abf02739)
OMEGA Speedmaster 🌘🌑“Dark Side of the Moon”Co-Axial Master Chronometer Chronograph|Ref. 310.92.44.51.01.001| 2025 | Full Set in Like New Condition
The OMEGA Speedmaster 'Dark Side of the Moon' is a modern icon that blends OMEGA's space-faring heritage with advanced materials, crafted entirely in black ceramic for exceptional scratch resistance and lightweight wearability.
- Condition: Excellent
- Case size: 44.25 mm
- Set: Full set (box, papers, 5 year warranty)
- Movement: Co-Axial Master Chronometer Calibre 9908
![[WTS] Omega Speedmaster. 39mm. Special Dial.](https://preview.redd.it/g5hh4ppwfxdg1.jpeg?auto=webp&s=9f6bb06d948b1936c42120340f03afffccf51e0a)
Omega Speedmaster. 39mm. Special Dial.
A 39mm Omega Speedmaster with a special texture dial is being sold. The watch is located in NJ USA and comes with the option for a Facetime viewing.
- Case diameter: 39mm
- Movement type: automatic
![[WTS] Omega Speedmaster. 39mm. White Ceramic. Very nice.](https://preview.redd.it/vg3z74icfxdg1.jpeg?auto=webp&s=b33324fb81fa5f56e0c48212c2f053ff89c7dfce)
Omega Speedmaster. 39mm. White Ceramic. Very nice.
This Omega Speedmaster is a 39mm watch with white ceramic and strong lume. It's a great timepiece that comes with additional photos available upon request.
- Case size: 39mm
- Material: white ceramic
- Lume strength: strong
![[WTS] Omega Speedmaster FOIS – Full Set – $4,300 Shipped OBO](https://preview.redd.it/5wcxjlovbudg1.jpg?width=640&crop=smart&auto=webp&s=9460323e912181da91ac4a040d9446faed8de89f)
Omega Speedmaster FOIS – Full Set – $4,300 Shipped OBO
The Omega Speedmaster FOIS is a widely regarded, wearable watch that captures classic early Speedmaster proportions with its 39.7mm straight-lug case.
- Condition: Very good overall
- Case size: 39.7mm diameter
- Movement type: Manual winding
- Crystal material: Hesalite
![[WTS] Omega Speedmaster Reduced](https://preview.redd.it/a0v0sfedjtdg1.jpg?width=640&crop=smart&auto=webp&s=fcdb1f1a7f30df0c6bbf26c36295569b6f31ab44)
Omega Speedmaster Reduced
A used Omega Speedmaster Reduced purchased from Japan with original box and papers.
- Condition: Great working shape
- Original Box And Papers: Yes, with Japanese documentation
- Extra Links: Fitting up to 7.5-8 inches
![[WTS] OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥](https://preview.redd.it/iqow4jggetdg1.jpg?width=640&crop=smart&auto=webp&s=c1580e5c83458430359952bbeeea1aa760bab676)
OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥
The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 commemorates the 50th anniversary of the Apollo 8 mission, featuring a black ceramic case with a skeletonized and laser-ablated dial. The watch is powered by the Calibre 1869 movement and comes in an ultimate set with various accessories.
- Condition: UNWORN
- Case material: black ceramic
- Diameter: 44.25mm
- Movement: Calibre 1869 with blackened bridges and mainplate
![[WTS] Omega Reverse Panda Speedmaster Full Set $11,900 including CONUS shipping 310.30.42.50.01.004](https://preview.redd.it/hku04muf7tdg1.jpg?width=640&crop=smart&auto=webp&s=470627cbe6e82cf866aba18921acdc4262816242)
Omega Reverse Panda Speedmaster Full Set $11,900 including CONUS shipping 310.30.42.50.01.004
For sale is the new Speedmaster reverse panda, comes with full links and all accessories.
- Condition: Unworn, essentially new condition
- Case Size: 42mm diameter
- Shipping Included: continental US
![[WTS] Omega Speedmaster Professional Moonwatch Sapphire Sandwich – Full Set – Sept 2025 Warranty – Bracelet + Leather](https://preview.redd.it/xej1fg8hqsdg1.jpg?width=640&crop=smart&auto=webp&s=31d7d71ed9d634e7c863befd261a70e5b14fefb8)
Omega Speedmaster Professional Moonwatch Sapphire Sandwich – Full Set – Sept 2025 Warranty – Bracelet + Leather
This Omega Speedmaster Professional Moonwatch features a 42mm stainless steel case with sapphire crystal front and display caseback, powered by a manual-wind movement.
- Condition: Very good condition
- Case size: 42mm diameter
- Crystal material: Sapphire front & display caseback
- Movement type: Manual-wind Co-Axial Master Chronometer