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] Omega Speedmaster Snoopy in RARE Full Collector Set](https://preview.redd.it/u7q2wwy6xfxe1.jpg?width=640&crop=smart&auto=webp&s=37545368fed0211a07f0d38068d593d044154ae9)
Omega Speedmaster Snoopy in RARE Full Collector Set
The Omega Speedmaster Snoopy is a rare and limited edition watch released in 2003 to celebrate the Silver Snoopy award given to Omega for its involvement in the Apollo 13 mission. The watch features an iconic hand-wound cal 1861 chronograph movement and a stunning dial with limited edition Snoopy artwork on the back.
- Condition: Ultra clean condition, with minimal signs of wear
- Movement: Iconic hand-wound calibre 1861 chronograph
- Bracelet Length: >7.5 inches
- Case Size: 42MM stainless steel case
![[WTS] Omega Speedmaster hesalite 3861](https://preview.redd.it/wt75ddxrufxe1.jpeg?auto=webp&s=d417e8094d8457f7e9c0075394fa7caf9c84671d)
Omega Speedmaster hesalite 3861
2022 Omega Speedmaster Professional hesalite model, comes with warranty cards, box, manuals, and price tag.
- Warranty Cards Box Manuals: included
- Spiral Winder: yes
- Sapphire Case Back: yes

Omega SPEEDMASTER ANNIVERSARY SERIES FIRST OMEGA IN SPACE 2024 FULL SET
2024 39.7mm Omega FOIS Speedmaster Anniversary Series First Omega in Space, Stainless Steel with Sapphire Crystals & Dark Blue Dial.
- Condition: Excellent Condition
- Movement: Omega 3861 Manual Winding Movement
- Diameter: 39.7mm
![[WTS] Omega Speedmaster ’57 - Under Warranty - $6,799 Shipped - Omega Tariff Prices Increase Incoming](https://preview.redd.it/vaoibxkeoexe1.jpg?width=640&crop=smart&auto=webp&s=7050696a5c282dedbfa24f8c13afbd2fb53a1887)
Omega Speedmaster ’57 - Under Warranty - $6,799 Shipped - Omega Tariff Prices Increase Incoming
A vintage-correct Omega Speedmaster '57 Co-Axial Master Chronometer Chronograph featuring a stunning sunburst blue sandwich dial and powered by Omega's new-generation Caliber 9906 manual-wind chronograph movement.
- Condition: Excellent condition with light signs of wear
- Movement: Omega Caliber 9906 (Hand-wound, Co-Axial Escapement, Master Chronometer Certified)
- Case size: 40.5mm
- Thickness: ~13mm
![[wts] Omega Speedmaster racing 9900 44.25mm 329.33.44.51.01.001 under warranty](https://preview.redd.it/fj7zks8y8exe1.jpg?width=640&crop=smart&auto=webp&s=3c1a1fc865118abb8e147260310b314aec105239)
Omega Speedmaster racing 9900 44.25mm 329.33.44.51.01.001 under warranty
This Omega Speedmaster racing watch features a 44.25mm case size and is still under warranty.
- Condition: Good condition
- Case size: 44.25mm
![[WTS] Omega Speedmaster. 42mm. Special Edition.](https://preview.redd.it/i0h9ioqxzdxe1.jpg?width=640&crop=smart&auto=webp&s=b307058001dfe66de49ef4b365cf78223245c122)
Omega Speedmaster. 42mm. Special Edition.
A Special Edition Omega Speedmaster Chronograph with a 42mm dial, characterized by its unique design and features.
- Size: 42mm
- Dial type: cool dial
Omega Speedmaster Mark II Rio Special Edition
A 2016 Omega Speedmaster Mark II Rio Olympics Special Edition, featuring a steel case, black crystal, and scratch-resistant sapphire crystal. It has a water resistance of 100m and is powered by the self-winding Omega caliber 3330.
- Condition: Outstanding condition
- Case diameter: 42.4 x 46.2mm
- Thickness: 14.9mm
- Water resistance depth rating: 100m
Omega Speedmaster Triple Date Calendar Moonphase 18k Ref. 175.0034
This Omega Speedmaster features a white dial and is equipped with chronograph, date, day, and moonphase functions. The watch has a 18K yellow gold case measuring 39mm in size.
- Condition: 90%
- Case material: 18K Yellow Gold
- Movement type: Mechanical Automatic
Omega Speedmaster Professional Moonwatch 'Sapphire Sandwich' 3861 - New 2025
The Omega Speedmaster Professional Moonwatch 'Sapphire Sandwich' is a new iconic watch featuring sapphire crystal and a sapphire see-thru caseback showcasing the new caliber 3861 movement.
- Condition: New unworn
- Case size: 42mm diameter
- Movement: Omega Caliber 3861, manual-winding chronograph
- Crystal: sapphire crystal