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 Day Date 3523.80](https://preview.redd.it/bcqryecka6xg1.jpg?width=640&crop=smart&auto=webp&s=3089ffabc225adabbe7aa2434e49e5a747c8369c)
Omega Speedmaster Day Date 3523.80
This Omega Speedmaster Day Date features a beautiful blue dial and is in excellent condition with minimal signs of wear.
- Condition: Excellent
- Payment Methods Accepted: pretty much every payment method, including crypto
- Meetup Location: southwest FL
- Available Trades: Tudor, Cartier, Rolex, Omega, Breitling, AP
![[WTS] Omega Speedmaster Racing 326.30.40.50.03.001](https://preview.redd.it/j259226j96xg1.jpg?width=640&crop=smart&auto=webp&s=6444ced954001ce2d03290d1142573e20020737d)
Omega Speedmaster Racing 326.30.40.50.03.001
For sale is an Omega Speedmaster Racing, in great condition with some light wear around the watch.
- Condition: great condition with some light wear
- Payment Methods Accepted: pretty much every payment method including crypto
- Local Meet Available: yes
![[WTS] Omega Speedmaster Date 38.5mm 3513.54](https://preview.redd.it/o6sgrlko86xg1.jpg?width=640&crop=smart&auto=webp&s=9e3529ac8402405f5bb64f009b62462320b2a6d1)
Omega Speedmaster Date 38.5mm 3513.54
For sale is an Omega Speedmaster Date 38.5mm reference number 3513.54, in good condition, from 1998.
- Condition: good with some wear and small marks
- Year of production: 1998
- Case size: 38.5mm
![[WTS] Omega Speedmaster Reduced 3510.50](https://preview.redd.it/lnykkhpx56xg1.jpg?width=640&crop=smart&auto=webp&s=aa5e42a65deb97ee6a9eef0da9505d91a9065bed)
Omega Speedmaster Reduced 3510.50
For sale is an Omega Speedmaster Reduced 3510.50 in great condition, with some minor wear and fading on the bezel.
- Condition: Great condition with some light wear and fading on the bezel
- Payment Methods Accepted: Various payment methods including crypto with a small fee, excluding PayPal
- Local Pickup Available: Yes, located in southwest FL
- Trading Possible: Yes, only with brands Tudor, Cartier, Rolex, Omega, Breitling, AP
![[WTS] 2026 Omega Speedmaster Professional White Dial 310.32.42.50.04.002 Full Set $7,300](https://preview.redd.it/krybhbjl36xg1.jpg?width=640&crop=smart&auto=webp&s=b0e3fc157b8e34264357a60661bf42b3116f2829)
2026 Omega Speedmaster Professional White Dial 310.32.42.50.04.002 Full Set $7,300
A modern Omega Speedmaster Professional with a lacquered white dial, powered by the Co-Axial Master Chronometer Calibre 3861, featuring a clean and high-contrast look while maintaining the iconic Speedmaster design.
- Condition: Like new
- Case size: 42mm diameter
- Case material: Stainless steel
- Movement: Manual wind (Omega Calibre 3861 Master Chronometer)
![[WTS] Omega Speedmaster ‘57 reference 331.12.42.51.01.001 - Complete set with hang tag, undated](https://preview.redd.it/f32y8cpys5xg1.jpg?width=640&crop=smart&auto=webp&s=9a8bab4cc3c7cf5959ef3b7750de2911e75b6fe6)
Omega Speedmaster ‘57 reference 331.12.42.51.01.001 - Complete set with hang tag, undated
For sale is an Omega Speedmaster '57 reference 331.12.42.51.01.001, complete set with hang tag and undated.
- Condition: undated
- Diameter: 42mm
![[WTS] 2025 Omega Speedmaster Racing 329.32.44.51.06.001 44MM Full Set](https://preview.redd.it/jqduxu50d5xg1.jpg?width=640&crop=smart&auto=webp&s=8deae4882e10508618038273b03761ff17bf2af0)
2025 Omega Speedmaster Racing 329.32.44.51.06.001 44MM Full Set
This is a 2025 Omega Speedmaster Racing Chronograph with a silver/grey dial and a 44mm case size. It comes as a full set with box, papers, and warranty coverage through January 2030.
- Condition: Excellent
- Case Size: 44mm diameter
- Box And Papers: true
![[WTS] 2025 Omega Speedmaster Professional Sapphire](https://preview.redd.it/4w8awycw75xg1.jpg?width=640&crop=smart&auto=webp&s=e607ec239e37165ba4c0861937d63c09dba8b604)
2025 Omega Speedmaster Professional Sapphire
This Omega Speedmaster Professional Sapphire is being sold with a full kit and has been pressure tested at the Omega AD in April. It comes with a luna replica NASA velcro strap for reference.
- Purchase History: purchased from this subreddit
- Inclusions: full kit, luna replica NASA velcro strap
- Wrist Size Reference: 6.5"
![[WTS] Omega Speedmaster Reduced 3510.50 Bracelet Set - 22 Links, Full size, 94/100 Condition, OEM 1469/811](https://preview.redd.it/taikxlm415xg1.jpg?width=640&crop=smart&auto=webp&s=f245081162d357c47d7b6b3809af19d26af75cb0)
Omega Speedmaster Reduced 3510.50 Bracelet Set - 22 Links, Full size, 94/100 Condition, OEM 1469/811
This is an original Omega Speedmaster Reduced bracelet set in excellent condition, featuring a stainless steel finish and a folding clasp with tight action.
- Condition: 94/100 - excellent vintage condition
- Bracelet reference: 1469
- Endlinks reference: 811 (pair included)
- Total links: 22 (full complete set)