Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Bracelet
Reference 310.30.42.50.01.001
About this watch
The Omega Speedmaster Professional Moonwatch 3861 is a masterpiece that combines timeless elegance with modern technology. Founded in 1848, Omega has been a pillar in the world of horology, synonymous with precision and innovation. From its stunning design to its robust functionality, it encapsulates the spirit of adventure and precision that Omega is known for. The Speedmaster line has always been a favorite, and the 3861 model is no exception. With a diameter of 42 mm, the stainless steel case provides both durability and a polished aesthetic. The tachymeter bezel allows for speed calculations over a known distance, making it not just a pretty face but a functional tool. At the heart of the Speedmaster Professional Moonwatch is the Omega Caliber 3861, a hand-wound movement that's a modern upgrade from previous models, incorporating a co-axial escapement and a silicon balance spring. The craftsmanship is evident in the intricate details of the movement, which you can admire through the closed case back.
Key Features
- Stainless steel case with black matte finish
- 42 mm diameter for a refined yet statement-making size
- Plexi glass for added durability and shock resistance
- Master Chronometer certification by METAS for accuracy and reliability
- Hand-wound Omega Caliber 3861 movement with co-axial escapement and silicon balance spring
- Chronograph function with small seconds, hours, and minutes
- Water resistance of 50 meters for everyday wear
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Bracelet
- Reference
- 310.30.42.50.01.001
- Movement
- 3861
- Movement Features
-
- Small Seconds, Hours, Minutes
- Chronograph
- Chronometer
- Case
- Stainless Steel 42mm
- Dial Color
- Black
- Crystal
- Plexi
- Water Resistance
- 50
Current Listings
![[WTS] OMEGA Speedmaster 🌘🌑“Dark Side of the Moon”Co-Axial Master Chronometer Chronograph|Ref. 310.92.44.51.01.001| 2025 | Full Set in Like New Condition](https://preview.redd.it/wdbhc2mdpxdg1.jpg?width=640&crop=smart&auto=webp&s=a1e550ea35c47efb184141a12e9b1fc8abf02739)
OMEGA Speedmaster 🌘🌑“Dark Side of the Moon”Co-Axial Master Chronometer Chronograph|Ref. 310.92.44.51.01.001| 2025 | Full Set in Like New Condition
The OMEGA Speedmaster 'Dark Side of the Moon' is a modern icon that blends OMEGA's space-faring heritage with advanced materials, crafted entirely in black ceramic for exceptional scratch resistance and lightweight wearability.
- Condition: Excellent
- Case size: 44.25 mm
- Set: Full set (box, papers, 5 year warranty)
- Movement: Co-Axial Master Chronometer Calibre 9908
![[WTS] Omega Speedmaster. 39mm. Special Dial.](https://preview.redd.it/g5hh4ppwfxdg1.jpeg?auto=webp&s=9f6bb06d948b1936c42120340f03afffccf51e0a)
Omega Speedmaster. 39mm. Special Dial.
A 39mm Omega Speedmaster with a special texture dial is being sold. The watch is located in NJ USA and comes with the option for a Facetime viewing.
- Case diameter: 39mm
- Movement type: automatic
![[WTS] Omega Speedmaster. 39mm. White Ceramic. Very nice.](https://preview.redd.it/vg3z74icfxdg1.jpeg?auto=webp&s=b33324fb81fa5f56e0c48212c2f053ff89c7dfce)
Omega Speedmaster. 39mm. White Ceramic. Very nice.
This Omega Speedmaster is a 39mm watch with white ceramic and strong lume. It's a great timepiece that comes with additional photos available upon request.
- Case size: 39mm
- Material: white ceramic
- Lume strength: strong
![[WTS] Omega Speedmaster FOIS – Full Set – $4,300 Shipped OBO](https://preview.redd.it/5wcxjlovbudg1.jpg?width=640&crop=smart&auto=webp&s=9460323e912181da91ac4a040d9446faed8de89f)
Omega Speedmaster FOIS – Full Set – $4,300 Shipped OBO
The Omega Speedmaster FOIS is a widely regarded, wearable watch that captures classic early Speedmaster proportions with its 39.7mm straight-lug case.
- Condition: Very good overall
- Case size: 39.7mm diameter
- Movement type: Manual winding
- Crystal material: Hesalite
![[WTS] Omega Speedmaster Reduced](https://preview.redd.it/a0v0sfedjtdg1.jpg?width=640&crop=smart&auto=webp&s=fcdb1f1a7f30df0c6bbf26c36295569b6f31ab44)
Omega Speedmaster Reduced
A used Omega Speedmaster Reduced purchased from Japan with original box and papers.
- Condition: Great working shape
- Original Box And Papers: Yes, with Japanese documentation
- Extra Links: Fitting up to 7.5-8 inches
![[WTS] OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥](https://preview.redd.it/iqow4jggetdg1.jpg?width=640&crop=smart&auto=webp&s=c1580e5c83458430359952bbeeea1aa760bab676)
OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥
The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 commemorates the 50th anniversary of the Apollo 8 mission, featuring a black ceramic case with a skeletonized and laser-ablated dial. The watch is powered by the Calibre 1869 movement and comes in an ultimate set with various accessories.
- Condition: UNWORN
- Case material: black ceramic
- Diameter: 44.25mm
- Movement: Calibre 1869 with blackened bridges and mainplate
![[WTS] Omega Reverse Panda Speedmaster Full Set $11,900 including CONUS shipping 310.30.42.50.01.004](https://preview.redd.it/hku04muf7tdg1.jpg?width=640&crop=smart&auto=webp&s=470627cbe6e82cf866aba18921acdc4262816242)
Omega Reverse Panda Speedmaster Full Set $11,900 including CONUS shipping 310.30.42.50.01.004
For sale is the new Speedmaster reverse panda, comes with full links and all accessories.
- Condition: Unworn, essentially new condition
- Case Size: 42mm diameter
- Shipping Included: continental US
![[WTS] Omega Speedmaster Professional Moonwatch Sapphire Sandwich – Full Set – Sept 2025 Warranty – Bracelet + Leather](https://preview.redd.it/xej1fg8hqsdg1.jpg?width=640&crop=smart&auto=webp&s=31d7d71ed9d634e7c863befd261a70e5b14fefb8)
Omega Speedmaster Professional Moonwatch Sapphire Sandwich – Full Set – Sept 2025 Warranty – Bracelet + Leather
This Omega Speedmaster Professional Moonwatch features a 42mm stainless steel case with sapphire crystal front and display caseback, powered by a manual-wind movement.
- Condition: Very good condition
- Case size: 42mm diameter
- Crystal material: Sapphire front & display caseback
- Movement type: Manual-wind Co-Axial Master Chronometer
![[WTS] OMEGA Speedmaster Calibre 321 "Ed White" Ref. 311.30.40.30.01.001 - ULTIMATE SET! 🔥$18,000🔥](https://preview.redd.it/kii7nrlkosdg1.jpg?width=640&crop=smart&auto=webp&s=3ffc8bfc515522ad3d316d04e13532eba542268c)
OMEGA Speedmaster Calibre 321 "Ed White" Ref. 311.30.40.30.01.001 - ULTIMATE SET! 🔥$18,000🔥
The OMEGA Speedmaster Calibre 321 Ref. 311.30.40.30.01.001 is a faithful recreation of the reference 105.003, famously worn by astronaut Ed White during America's first spacewalk.
- Condition: UNWORN
- Movement: Calibre 321
- Case material: stainless steel
- Diameter: 39.7mm