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 reduced](https://preview.redd.it/wjybdu9x49xg1.jpg?width=640&crop=smart&auto=webp&s=59e60778d69577bd625b57d71d5a9ab6347039c5)
Omega speedmaster reduced
Up for sale is my Omega Speedmaster Reduced from the mid 1990s, which comes in a stainless steel case with a black dial and automatic chronograph.
- Condition: Great condition for its age, with patina
- Case size: 39mm
- Bracelet type: Stainless steel and Uncle's flat link bracelet
- Bracelet material: Stainless steel
![[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! 馃敟$10,000馃敟](https://preview.redd.it/amn8ld3er7xg1.jpg?width=640&crop=smart&auto=webp&s=7c27b2e9475340cd4eecc23d152cc608de8d04da)
OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 馃敟$10,000馃敟
The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 watch commemorates the 50th anniversary of the Apollo 8 mission, featuring a black ceramic case and a skeletonized dial with a lunar surface design.
- Condition: UNWORN
- Case material: black ceramic
- Case diameter: 44.25mm
![[WTS] Omega Speedmaster Racing with a box 40mm](https://preview.redd.it/vi9jrp5wb7xg1.jpg?width=640&crop=smart&auto=webp&s=e91fec5f953fe5df3ecd37f7ba61dc5864bb7efc)
Omega Speedmaster Racing with a box 40mm
- Box: included
![[WTS] Omega OEM Integrated Speedmaster Rubber Straps - One with OEM Clasp - One Without Clasp (Backordered thru Omega)](https://preview.redd.it/fxxaq044w6xg1.jpg?width=640&crop=smart&auto=webp&s=aa1accc3e36890b20a37d3656db713d36ae5a125)
Omega OEM Integrated Speedmaster Rubber Straps - One with OEM Clasp - One Without Clasp (Backordered thru Omega)
Additional details for Omega Speedmaster Professional rubber straps with curved ends and stainless steel deployant clasp. Designed to fit 20mm lugs.
- Condition: Very Good
- Material: rubber
- Clasp Type: stainless steel deployant clasp
- Lugs Size: 20mm
![[WTS] 2026 LNIB OMEGA Speedmaster Moonwatch Professional "Reverse Panda" 310.30.42.50.01.004 - Full Set](https://preview.redd.it/tq340bu5p6xg1.jpg?width=640&crop=smart&auto=webp&s=badbb717269a994c510cb666fd63a40ced105216)
2026 LNIB OMEGA Speedmaster Moonwatch Professional "Reverse Panda" 310.30.42.50.01.004 - Full Set
The Omega Speedmaster Moonwatch Professional 'Reverse Panda' is a new addition to the permanent Moonwatch collection, featuring a glossy polished black lacquered step dial with white varnished and lacquered sub-dials.
- Condition: Pristine pre-owned condition, virtually like new
- Case size: 42mm diameter
- Movement: Manual-Winding Co-Axial Master Chronometer Calibre 3861 (METAS certified)
- Power reserve: ~50 hours
![[WTS] Omega Speedmaster Broad Arrow 3594.50](https://preview.redd.it/6h9buz8db6xg1.jpg?width=640&crop=smart&auto=webp&s=dfdaf5240a2968f6b02a4e8a421ee77d1d180e51)
Omega Speedmaster Broad Arrow 3594.50
A Speedmaster Broad Arrow reference 3594.50 in excellent condition with very little wear, running great and available for sale.
- Condition: excellent
![[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