Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Sapphire / Calf
Reference 310.32.42.50.01.002
About this watch
The Omega Speedmaster Professional Moonwatch 3861 is an engineering marvel that combines style with functionality, paying homage to its illustrious past as the first watch worn on the moon. This iconic timepiece boasts a sleek, matte black dial and polished stainless steel case, striking an excellent balance between boldness and subtlety. At its heart lies the Omega caliber 3861, an updated version of the legendary caliber 861/1861, featuring a Co-Axial escapement and silicon balance spring for accuracy and resistance to magnetic fields up to 15,000 gauss. The watch's robust stainless steel construction and sapphire crystal provide a durable exterior and protect the watch face from scratches, while its water resistance of 50 meters ensures it can withstand accidental splashes. With an open case back revealing the intricate movement within, this timepiece showcases Omega's craftsmanship and attention to detail. The Speedmaster is a versatile accessory that adapts effortlessly to any style or occasion, making it a worthy investment for anyone who appreciates the finer things in life.
Key Features
- Manual-winding chronograph movement
- Master Chronometer Certified
- 50-meter water resistance
- Co-Axial escapement and silicon balance spring
- Open case back revealing intricate movement
- Robust stainless steel construction with sapphire crystal
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Sapphire / Calf
- Reference
- 310.32.42.50.01.002
- Movement
- 3861
- Movement Features
-
- Small Seconds, Hours, Minutes
- Chronograph
- Chronometer
- Case
- Stainless Steel 42mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 50
Current Listings

Omega Speedmaster Moonwatch Sapphire - 3861 - 310.30.42.50.01.002 (new / 2025)
A brand new Omega Speedmaster Moonwatch Professional Sapphire with Adjustable Clasp, featuring a 42mm stainless steel case and 3861 Omega Master Chronometer Movement.
- Condition: Brand new
- Case size: 42mm diameter
- Water resistance: not specified

Omega Speedmaster Moonwatch Hesalite - 3861 - 310.30.42.50.01.001 (new / 2025)
This Omega Speedmaster Moonwatch Professional features a stainless steel case and a Master Chronometer movement, with a hesalite crystal. It comes complete with all boxes, papers, booklets, hang tag, and a 2025 Omega Warranty Card.
- Condition: Brand New
- Case size: 42mm
- Movement type: Master Chronometer
Omega Speedmaster Reduced White Dial Automatic 3510.2000
A white dial Omega Speedmaster Reduced, a chronograph with a mechanical automatic movement, housed in a stainless steel case.
- Condition: 90%
- Case Size: 38mm diameter
- Movement Type: Mechanical Automatic
![[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