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
2022 Omega Speedmaster Moonwatch Sapphire 42mm 310.30.42.50.01.002 Mint Complete
This 2022 Omega Speedmaster Moonwatch Sapphire 42mm is a first watch worn on the moon, featuring photos and a video on the seller's website.
- Condition: Minty fresh
- Case size: 42mm
- Year: 2022
- Contents: watch,inner & outer boxes,warranty card,pictogram,master chronometer,instruction booklet,black travel case,hang tag,cleaning cloth,Moonwatch Booklet
Omega Speedmaster Chronograph - Blue - Stainless Steel - 38mm - Mint
This Omega Speedmaster Chronograph features a 38mm stainless steel case, blue dial, and automatic movement.
- Condition: Pre-Owned - Mint
- Case size: 38mm diameter
- Bracelet type: Stainless Steel
- Dial color: Blue

Omega Speedmaster 321 Ed White
This Omega Speedmaster 321 Ed White is an original purchase from a US OB in 2023, worn sparingly since.
- Condition: Good condition with minor scuffs
- Warranty: includes warranty cards
- Links: all links included

2023 Omega Speedmaster �SNOOPY� 50th Anniversary 310.32.42.50.02.001 BOXES/PAPER
This is a 2023 Omega Speedmaster �SNOOPY� 50th Anniversary model, one of the most exclusive pieces in the watch world. It features a stainless steel case with a silver dial and comes with an OEM Omega stainless steel bracelet.
- Condition: Excellent pre-owned
- Case diameter: 42mm
- Water resistance: 50m depth rating
- Movement type: Manual

Omega Speedmaster Moonwatch Sapphire - 3861 - 310.30.42.50.01.002 (new / 2025)
This Omega Speedmaster Moonwatch Professional features a 42mm stainless steel case and is powered by the 3861 Omega Master Chronometer Movement.
- Condition: Brand new
- Case size: 42mm
- Movement type: 3861 Omega Master Chronometer

Omega Speedmaster Moonwatch Hesalite - 3861 - 310.30.42.50.01.001 (new / 2025)
A brand new Omega Speedmaster Moonwatch Professional Hesalite with a stainless steel case and 3861 Omega Master Chronometer movement.
- Condition: Brand new
- Case size: 42mm diameter
- Movement: Omega Master Chronometer

>>REDUCED<< OMEGA SPEEDMASTER PROFESSIONAL 1974 Stepped Dial
A 1974 Omega Speedmaster Professional with a stepped dial, manual winding chronograph movement (calibre 861), and tritium indices in superb condition.
- Condition: Very good vintage condition
- Diameter: 42 mm
- Bracelet: Omega Speedmaster 1125 bracelet with 516 end links
- Movement: Manual winding chronograph calibre 861

NEW 2021 Omega Speedmaster "Ed White" 39.7mm 311.30.40.30.01.001 Black Dial
The Omega Speedmaster 'Ed White' is a nod to the version worn by Ed White, featuring a black step dial and vintage-style applied logo.
- Condition: New with minor scratches from handling
- Diameter: 39.7mm
- Box And Papers: Yes

Omega Speedmaster Automatic 3510.50 39mm
a discontinued Omega Speedmaster Reduced model from 1998, featuring an automatic self-winding movement and a black dial with luminous hands and markers.
- Condition: Good
- Movement type: Automatic self-winding
- Crystal material: Hesalite