Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Sapphire / Bracelet
Reference 310.30.42.50.01.002
About this watch
The Omega Speedmaster Professional Moonwatch, reference 310.30.42.50.01.002, is a masterpiece of horology that embodies the perfect blend of history, function, and style. This iconic watch features a classic round case with a diameter of 42 mm and a height of 13.18 mm, encasing a stunning matte black dial that provides a perfect contrast to the stainless steel exterior. The sapphire crystal glass offers unparalleled scratch resistance and clarity, allowing wearers to enjoy this watch in everyday situations without worrying about damaging the face. At its core is the Omega caliber 3861 movement, an updated version of the previous caliber 861 and 1861, featuring a co-axial escapement and silicon balance spring that enhances accuracy and longevity. This Master Chronometer certified by METAS ensures reliable performance under various conditions, with a power reserve of 50 hours and a frequency of 21,600 vibrations per hour. The Omega Speedmaster isn't just a timekeeper; it's a fully functional chronograph with small seconds, hours, and minutes hands that can easily track elapsed time in any setting. This watch is perfect for daily wear, with a water resistance of 50 meters making it suitable for splashes and brief immersion in water. The stainless steel bracelet is both stylish and comfortable, designed for wearability and featuring solid yet lightweight links that adjust effortlessly to find the perfect fit. Whether you're dressed formally or casually, this watch complements any look and is sure to spark conversations with its iconic design and historical significance.
Key Features
- 42mm stainless steel case
- Sapphire crystal glass for scratch resistance
- Master Chronometer certified Omega caliber 3861 movement
- Chronograph function with small seconds, hours, and minutes hands
- Water resistance of 50 meters
- Stainless steel bracelet with adjustable links
- Iconic tachymetric scale on the bezel
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Sapphire / Bracelet
- Reference
- 310.30.42.50.01.002
- 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
![[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

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 the 3861 Omega Master Chronometer Movement.
- Condition: Brand New
- Case size: 42mm diameter
- Movement: Omega Master Chronometer Movement
![[WTS] Omega Speedmaster Professional Moonwatch Sapphire with box and papers](https://preview.redd.it/fr60snsfmyye1.jpg?width=640&crop=smart&auto=webp&s=63a43fd007c68b838f54e7e56c77701e18b10583)
Omega Speedmaster Professional Moonwatch Sapphire with box and papers
This Omega Speedmaster Professional Moonwatch Sapphire is a complete set with original boxes and papers, purchased in September 2021. It features a 42mm case size and is in excellent condition.
- Condition: Excellent condition, purchased in September 2021
- Case size: 42mm
![[WTS] Omega Speedmaster Professional Sapphire Sandwich 3861](https://preview.redd.it/tb12q1b8ltye1.jpeg?auto=webp&s=c6ecf2204476cf722103359f48142c84afbb8842)
Omega Speedmaster Professional Sapphire Sandwich 3861
This Omega Speedmaster Professional Sapphire Sandwich is a high-end watch with excellent condition, pre-2023 bracelet clasp, and three custom straps from Aaron Bespoke.
- Condition: Excellent condition
- Bracelet type: original clasp
- Bracelet material: not specified
- Straps included: 3
![[WTS] New 2025 Omega Speedmaster Moonwatch Professional Sapphire Black Dial Full 4/25 Ref: 310.30.42.50.01.002](https://preview.redd.it/bfpi8r2scsxe1.jpg?width=640&crop=smart&auto=webp&s=a1f2757ced8bcad94a9fe6985055f13730693282)
New 2025 Omega Speedmaster Moonwatch Professional Sapphire Black Dial Full 4/25 Ref: 310.30.42.50.01.002
This is a brand new Omega Speedmaster Moonwatch Professional with a black dial and sapphire crystal case.
- Condition: 10/10, unworn with stickers
- Diameter: 42mm
- Water Resistance: 50M
- Movement: 3861
![[WTS] 01/2025 Omega Speedmaster Sapphire Complete Set * $6,250 + label*](https://preview.redd.it/56h66hq3kgxe1.jpg?width=640&crop=smart&auto=webp&s=566873cca8680d914983a10df499b8816152e4a2)
01/2025 Omega Speedmaster Sapphire Complete Set * $6,250 + label*
This is a 2025 Speedmaster Sapphire sandwich Complete Set with micro-adjust clasp, including all cards and hang tag, travel case, literature, and cleaning cloth.
- Condition: Great condition, no issues
- Year: 1/2025
- Case contents: All cards and hang tag, travel case, Speedmaster literature, cleaning cloth
Omega Speedmaster Professional Moonwatch 'Sapphire Sandwich' 3861 - New 2025
The Omega Speedmaster Professional Moonwatch 'Sapphire Sandwich' is a new iconic watch featuring sapphire crystal and a sapphire see-thru caseback showcasing the new caliber 3861 movement.
- Condition: New unworn
- Case size: 42mm diameter
- Movement: Omega Caliber 3861, manual-winding chronograph
- Crystal: sapphire crystal
![[WTS] Omega Speedmaster Pro, moonwatch, sapphire sandwich, 3861 movement (2021)](https://preview.redd.it/5j811l3oe6xe1.jpg?width=640&crop=smart&auto=webp&s=9274d4e3ccae582d853def6fb607124411f4fe0a)
Omega Speedmaster Pro, moonwatch, sapphire sandwich, 3861 movement (2021)
A very quick catch and release for me. Up for sale is an Omega Speedmaster Professional 'Sapphire Sandwich' featuring the 3861 movement, known as the moonwatch.
- Condition: Excellent, minor signs of wear
- Movement: 3861
- Bracelet Size: sized to fit, includes all links
- Shipping: CONUS only