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

Omega Speedmaster Moonwatch Sapphire - 3861 - 310.30.42.50.01.002 (excellent)
This Omega Speedmaster Moonwatch Professional is a stainless steel watch with a 42mm case, featuring an Omega Master Chronometer movement.
- Condition: Excellent
- Case size: 42mm
- Movement type: Omega Master Chronometer

Omega 31062425099001 Speedmaster Moon watch 18K Yellow Gold
The Omega Speedmaster Moon watch is a Professional Moonshine model with an 18K yellow gold case on a rubber strap. It features a manual wind movement, 12-hour chronograph, and display caseback.
- Material: 18K Yellow Gold
- Movement: Omega caliber 3861
- Diameter: 42mm
OMEGA Speedmaster '57 Blue Chronograph Dial Steel Men's Watch 332.10.41.51.03.001
Omega Speedmaster '57 Blue Chronograph Dial Steel Men's Watch, purchased in 2024 with original AD receipt and box.
- Condition: Excellent
- Box: yes
- Papers: original AD receipt

Omega Speedmaster - FOIS - 310.30.40.50.06.001 ( excellent / 2024 )
This Omega Speedmaster FOIS is a 39.7mm stainless steel case watch with the 3861 Calibre. It comes with all original boxes, papers, booklets, and an Omega Warranty Card dated November 2024.
- Condition: Excellent condition
- Case size: 39.7mm
- Movement: Omega 3861 Calibre

Omega Speedmaster '57 - 40.5mm Co-Axial - 332.10.41.51.01.001 ( excellent )
This Omega Speedmaster '57 is a Novelties 2022 model with a 40.5mm stainless steel case, powered by the Master Co-Axial movement.
- Condition: Excellent
- Case size: 40.5mm diameter
- Movement type: Master Co-Axial

Omega Speedmaster '57 - Black / Leather - 331.12.42.51.01.002 ( excellent )
This Omega Speedmaster '57 Chronograph features a black dial on a leather strap, housed in a 41.5mm stainless steel case with a 9300 Master Co-Axial Movement.
- Condition: Excellent
- Case size: 41.5mm
- Movement type: Master Co-Axial

2002 Omega Speedmaster "Reduced" Ref. 3510.50 with Box & Papers
The Omega Speedmaster Reduced Automatic is a Luminova example in excellent pre-owned condition with a dial and hands in good condition, measuring 39mm in diameter.
- Condition: Excellent
- Case Width: 39mm
- Strap Length: 7.5 inches
- Movement: Automatic
Omega Speedmaster Dark Side of the Moon -311.92.44.51.01.003 - Ceramic - 44mm
The Omega Speedmaster 'Dark Side of the Moon' is a ceramic watch with a black dial, measuring 44mm in diameter. It features a co-axial chronograph movement and comes with an Omega box set, warranty card, and manual.
- Condition: Pre-Owned (Mint Grade)
- Case size: 44mm
- Bracelet type: Black Canvas with Tang Buckle
- Movement: Co-Axial Chronograph

Omega Speedmaster Moonwatch 3861 - White - 310.30.42.50.04.001 ( excellent )
This Omega Speedmaster Moonwatch Professional features a 42mm stainless steel case, white dial, and sapphire crystal.
- Condition: Excellent condition
- Case size: 42mm diameter
- Movement type: Omega Master Chronometer Movement