Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet
Reference 310.55.42.50.51.001
About this watch
The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold is a stunning blend of luxury and functionality, with its Sedna gold construction and intricate chronograph features. The watch's sheer elegance is undeniable, with a black sunburst finish contrasting beautifully with gem-set indexes and ruby accents. Certified as a Master Chronometer by METAS, the Omega caliber 3861 movement is an engineering marvel, resistant to magnetic fields up to 15,000 gauss. With small seconds, hours, and minutes hands, the chronograph functionality offers precision timing. The watch's durability is also noteworthy, with sapphire glass adding scratch resistance. The Sedna gold bracelet ensures a secure fit, while its adjustability makes it comfortable for wearers of all wrist sizes. This timepiece is not just a luxury item but a conversation starter, status symbol, and piece of horological history.
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Key Features
- Omega caliber 3861 movement with Co-Axial escapement and silicon balance spring
- Sedna gold construction with gem-set indexes and ruby accents
- 50m water resistance with sapphire glass scratch resistance
- Chronograph functionality with small seconds, hours, and minutes hands
- Adjustable Sedna gold bracelet for secure fit on all wrist sizes
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet
- Reference
- 310.55.42.50.51.001
- Movement
- 3861
- Movement Features
-
- Small Seconds, Hours, Minutes
- Chronograph
- Chronometer
- Case
- Sedna Gold 42mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 50
Current Listings
![[WTS][US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW](https://preview.redd.it/an2g2lh3ab3h1.jpg?width=640&crop=smart&auto=webp&s=11c7c47269d4d777335c37aaff808c8ac8572f05)
[US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW
This Omega Speedmaster Moonwatch Professional is a Reverse Panda model with a 42mm case size.
- Condition: Brand new, unworn
- Case size: 42mm diameter
- Water resistance: unknown
![[WTS] Omega Speedmaster 323.10.40.40.04.001 Specialities 2012 Olympic Games Collection Blue Red Hands | Good Condition | Serviced| 2200$](https://preview.redd.it/9ab6o8r76b3h1.jpg?width=640&crop=smart&auto=webp&s=8d5cbad4c44fbb86984ebfa31706442d33bfe721)
Omega Speedmaster 323.10.40.40.04.001 Specialities 2012 Olympic Games Collection Blue Red Hands | Good Condition | Serviced| 2200$
This Omega Speedmaster features a white dial with red and blue hands, part of the 2012 Olympic Games Collection.
- Condition: Good Condition
- Case size: 39mm
- Crystal type: Sapphire
- Lug width: 20mm
![[WTS] Memorial Day Weekend Sale – Omega Speedmaster Professional 3861 Sapphire (2022) – Full Set – Original Clasp + Micro-adjust Clasp – $6295 + shipping](https://preview.redd.it/w4q7rowkwa3h1.jpg?width=640&crop=smart&auto=webp&s=c4a131b3aec103749061f69e0e3630342b13759e)
Memorial Day Weekend Sale – Omega Speedmaster Professional 3861 Sapphire (2022) – Full Set – Original Clasp + Micro-adjust Clasp – $6295 + shipping
The modern Speedmaster features the METAS-certified 3861 movement and comes in a full set including both the newer micro-adjust clasp and original clasp.
- Condition: Excellent with light signs of wear
- Case material: Sapphire
- Movement certification: METAS-certified
![[WTS] 2025 Omega Speedmaster Moonwatch Professional White 42mm 310.30.42.50.04.001 — Excellent Condition, Box & Papers](https://preview.redd.it/ngjbzpswr61h1.jpeg?auto=webp&s=c3c31ccf1127bd5acee8e3e1b48b66b532c76659)
2025 Omega Speedmaster Moonwatch Professional White 42mm 310.30.42.50.04.001 — Excellent Condition, Box & Papers
The Omega Speedmaster Moonwatch Professional White features a striking white lacquered dial, classic asymmetrical case, and manually wound chronograph movement. It measures 42mm in diameter and comes complete with its original box and papers.
- Condition: Excellent condition with minor signs of wear on clasp and case
- Case size: 42mm diameter
- Lug to lug length: 47.5mm
- Thickness: 13.2mm
![[WTS] ALL THE GOLD! Rare Vintage 18K Omega Speedmaster Tribute to Astronauts Ref BA145.022 Unpolished Collector Example!](https://preview.redd.it/dn0ocdsec73h1.jpg?width=640&crop=smart&auto=webp&s=7b533b398420aadad9643a39db172204a97e81df)
ALL THE GOLD! Rare Vintage 18K Omega Speedmaster Tribute to Astronauts Ref BA145.022 Unpolished Collector Example!
A rare vintage Omega Speedmaster Tribute to Astronauts in solid gold, one of only 1014 made starting in November 1969.
- Condition: Unpolished, all original with incredible patina forming on the gold
- Case size: 42MM diameter
- Bracelet length: 7.5 inches
- Movement: Lemania-based hand wound caliber 861
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Omega Speedmaster Professional Moonwatch Hesalite – Full Set -$3500
For sale is my Omega Speedmaster Professional Moonwatch, reference 311.30.42.30.01.005.
- Condition: very good condition
- Year purchased: 2018
![[WTS] Omega Speedmaster. 39mm. Special Dial.](https://preview.redd.it/k1f6z2bt263h1.jpeg?auto=webp&s=4a846f1e529ad8994e9cef2b32ce20c63a51aa7e)
Omega Speedmaster. 39mm. Special Dial.
A 39mm Omega Speedmaster with a special dial is being sold. The watch has a gorgeous texture dial and comes from the owner's collection.
- Diameter: 39mm
![[WTS] Omega Speedmaster “Speedy Tuesday” Ultraman 311.12.42.30.01.001 Like New](https://preview.redd.it/rgdj1s73w53h1.jpeg?auto=webp&s=c97f697cd0fcefc5dda86c078f4817cc1c4f77a8)
Omega Speedmaster “Speedy Tuesday” Ultraman 311.12.42.30.01.001 Like New
This Omega Speedmaster 'Speedy Tuesday' Ultraman is in like new condition, featuring a sapphire speedmaster bracelet and multiple straps.
- Condition: Like New
- Bracelet type: Sapphire speedmaster
- Case condition: Case-back sticker
- Straps included: Nato strap & leather strap
![[WTS] Omega Speedmaster Date](https://preview.redd.it/jolb9pl6x43h1.jpg?width=640&crop=smart&auto=webp&s=3d3a39020f98af1b763db440a47405ed1d1365cc)
Omega Speedmaster Date
A beautiful, reliable Omega Speedmaster Date with a stunning grey sunburst dial. It has been well cared for and comes with documentation and authentication.