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 Professional Moonwatch Big Box Set + Omega NATO Strap + Extras](https://external-preview.redd.it/-2Fk4Ft4wlJdGfuqVQqhrUydLm4QC0Q3J4bfVl8JH_0.jpeg?auto=webp&s=9803b2e17f86d4173ae7c5084469f6a12654f35d)
Omega Speedmaster Professional Moonwatch Big Box Set + Omega NATO Strap + Extras
This Omega Speedmaster Professional Moonwatch comes with a big box set and various accessories, including an orange and black Omega NATO strap. The watch is in great condition with the original protective paper box still intact.
- Condition: Great condition with plastic on the inner briefcase box
- Straps included: 8
- Nato strap type: orange and black Omega NATO strap
- Outer packaging included: outer protective paper box
![[WTS] Omega Speedmaster Professional Hesalite Dec 24](https://preview.redd.it/3r71ih98q6ze1.jpg?width=640&crop=smart&auto=webp&s=05fcaafcad7290893af321102942ca15b45ef4c5)
Omega Speedmaster Professional Hesalite Dec 24
A brand new Omega Speedmaster Professional Hesalite, sold with the complete set and warranty cards. The watch is in excellent condition and runs flawlessly.
- Condition: near mint
- Purchase Year: 2024
- Warranty Cards: stamped
- Condition Scratches: minor hairline scratches on clasp

Omega SPEEDMASTER PROFESSIONAL MOONWATCH WHITE DIAL 2024 WARRANTY FULL SET
New 2024 Model 42mm Omega Speedmaster Professional Moonwatch Stainless Steel with White Dial & Sapphire Crystals. Manual-Winding Chronograph 3861 Movement with Co-Axial Escapement.
- Condition: Unpolished, Excellent condition
- Movement: Manual-winding chronograph 3861
- Crystals: Sapphire crystals
- Diameter: 42mm
![[WTS] Omega Speedmaster Dark Side of the Moon Apollo 8 Full Set 311.92.44.30.01.001](https://preview.redd.it/yizmad7626ze1.jpg?width=640&crop=smart&auto=webp&s=8eca6b2dfe1f5713d50a9b8dd8751f1713df9080)
Omega Speedmaster Dark Side of the Moon Apollo 8 Full Set 311.92.44.30.01.001
Up for sale is a Omega Speedmaster Moonwatch - Dark Side of the Moon - Apollo 8, a unique and collectible watch model.
- Condition: Excellent condition with no signs of wear
- Year: 2019
- Contents: Watch, Inner & Outer Box, International Warranty Card, Pictograms Card, Card Holder, Operating Instructions Manual, Omega Watch Cloth
![[WTS][US] Omega Speedmaster '57 - Blue Dial - 40.5mm - 332.10.41.51.03.001 - Full Set](https://preview.redd.it/1xjbdec716ze1.jpg?width=640&crop=smart&auto=webp&s=59fa52c10e2e19490eca8eb6580e5f1d4076ad72)
[US] Omega Speedmaster '57 - Blue Dial - 40.5mm - 332.10.41.51.03.001 - Full Set
Omega Speedmaster '57 - Blue Dial - 40.5mm. Functions perfectly mechanically without issue. Includes full set of accessories.
- Condition: Fantastic condition with minor hairlines on clasp, case, and bracelet
- Case size: 40.5mm diameter
![[WTS][US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set - BRAND NEW](https://preview.redd.it/l05gk7whz5ze1.jpg?width=640&crop=smart&auto=webp&s=6da359fb4dc4e17546f8f19bba9c52c431b44b6e)
[US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set - BRAND NEW
This Omega Speedmaster Moonwatch Professional features a white dial and is fully set, including its box, historical booklet, user manual, microfiber cloth, serialized case back sticker, and triple cards.
- Condition: Brand new and unworn
- Case Condition: Pristine
- Clasp Condition: Zero hairlines
- Bracelet Condition: Zero hairlines
![[WTS] 2023 OMEGA Speedmaster Anniversary Series Silver Snoopy 310.32.42.50.02.001](https://external-preview.redd.it/pwZmuGwyznvzB3u2yFg0AiYeD6XGPr1kAjQbCdgeZkc.jpeg?auto=webp&s=8a9d4c82273f58224bd3f852fd6b338369d27725)
2023 OMEGA Speedmaster Anniversary Series Silver Snoopy 310.32.42.50.02.001
The Omega Speedmaster Snoopy is a tribute to space exploration history, featuring an iconic blue enamel dial with Snoopy as an astronaut and a stunning silver medallion on the case back.
- Condition: Excellent
- Case materials: Stainless steel
- Dial material: Blue enamel
- Band: Strap and Bracelet included
![[WTS] New 2025 Omega Speedmaster Moonwatch Professional Sapphire Black Dial Full 4/25 Ref: 310.30.42.50.01.002](https://preview.redd.it/8xfxzglff5ze1.jpg?width=640&crop=smart&auto=webp&s=41bf5d76aeaa3961db636b65378dff381994fc66)
New 2025 Omega Speedmaster Moonwatch Professional Sapphire Black Dial Full 4/25 Ref: 310.30.42.50.01.002
This Omega Speedmaster Moonwatch Professional features a black lacquered dial, manual wind movement, and a 42mm size.
- Condition: 10/10, unworn with stickers
- Size: 42mm diameter
- Water resistance: 50m depth rating
- Movement: 3861 movement
![[WTS] Omega Speedmaster racing 326.30.40.50.01.001 w box & papers.](https://preview.redd.it/m49d0i6x63ze1.jpg?width=640&crop=smart&auto=webp&s=75d20b3efc1f8ad126c86205f03d27da31cbe76b)
Omega Speedmaster racing 326.30.40.50.01.001 w box & papers.
The Omega Speedmaster Racing 326.30.40.50.01.001 is a timepiece that blends iconic design, cutting-edge technology, and everyday versatility.
- Box: true
- Papers: true