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
![[WTS] Omega Speedmaster Date Grey 40mm Automatic 323.30.40.40.06.001](https://preview.redd.it/9im2aut9ncvf1.jpg?width=640&crop=smart&auto=webp&s=cfa201b83fe5b0c6cbcc51cbcfc0aa9caecda061)
Omega Speedmaster Date Grey 40mm Automatic 323.30.40.40.06.001
A beautiful Omega Speedmaster in a 40mm size, perfect for most wrists.
- Condition: Very good
- Size: 40mm diameter
- Case condition: Minimal signs of wear
![[WTS] Omega Speedmaster Broad Arrow 3594.50 (EU seller)](https://preview.redd.it/60k34gh9vavf1.jpg?width=640&crop=smart&auto=webp&s=5b744d635fac6b8e6066e2d4d6c957e0bba1371c)
Omega Speedmaster Broad Arrow 3594.50 (EU seller)
This Omega Speedmaster Broad Arrow is a unique design with a 42mm case, featuring calibre 1861 and accompanied by its original box and papers from 2004.
- Condition: Excellent condition, 20-year-old
- Size: 42mm diameter
- Bracelet material: Original steel
![[WTS] Omega Speedmaster Professional Moonwatch 18k Sedna Gold Black Dial 310.60.42.50.01.001](https://preview.redd.it/g8xi0btut9vf1.jpeg?auto=webp&s=e415f2796471345c17597193a1ce73f81a2b26c5)
Omega Speedmaster Professional Moonwatch 18k Sedna Gold Black Dial 310.60.42.50.01.001
A stunning Omega Speedmaster Professional Moonwatch with 18k Sedna gold and a deep black dial. This watch presents in excellent condition and comes with its outer box, inner box, booklet, and warranty card.
- Condition: Excellent, little to no signs of wear
- Movement: Mechanical (Manual) Movement Caliber: Omega 3861
- Case Size: 42mm diameter
- Thickness: 13.18mm
![[WTS][US] Omega Speedmaster Chronoscope - White Panda Dial - 43mm - 329.30.43.51.02.002](https://preview.redd.it/4p7tb1ylo9vf1.jpg?width=640&crop=smart&auto=webp&s=1f72c9bc89c9d586c6d8e70fe757be585d6be3d2)
[US] Omega Speedmaster Chronoscope - White Panda Dial - 43mm - 329.30.43.51.02.002
A 43mm Omega Speedmaster Chronoscope with a White Panda Dial, in excellent working order and accompanied by original accessories.
- Condition: Fantastic with minor hairlines
- Diameter: 43mm
![[WTS] OMEGA Speedmaster Moonwatch White Dial 2025 Full Set 310.30.42.50.04.001](https://preview.redd.it/1kn8b7oic5vf1.jpg?width=640&crop=smart&auto=webp&s=cd70ea2ae29c2229343ece05c3d9da93a2723484)
OMEGA Speedmaster Moonwatch White Dial 2025 Full Set 310.30.42.50.04.001
A white dial Omega Speedmaster Moonwatch with a stainless steel case, sapphire crystal, and water resistance of 5ATM (50 meters), powered by the in-house caliber 3861.
- Case diameter: 42mm
- Case thickness: 13.18mm
- Water resistance: 50m depth rating
Omega Speedmaster Chronograph - Blue - Stainless Steel - 38mm - Mint
This Omega Speedmaster Chronograph features a 38mm stainless steel case, blue dial, and automatic movement.
- Condition: Pre-Owned - Mint
- Case size: 38mm diameter
- Bracelet type: Stainless Steel
- Dial color: Blue

Omega Speedmaster 321 Ed White
This Omega Speedmaster 321 Ed White is an original purchase from a US OB in 2023, worn sparingly since.
- Condition: Good condition with minor scuffs
- Warranty: includes warranty cards
- Links: all links included

2023 Omega Speedmaster �SNOOPY� 50th Anniversary 310.32.42.50.02.001 BOXES/PAPER
This is a 2023 Omega Speedmaster �SNOOPY� 50th Anniversary model, one of the most exclusive pieces in the watch world. It features a stainless steel case with a silver dial and comes with an OEM Omega stainless steel bracelet.
- Condition: Excellent pre-owned
- Case diameter: 42mm
- Water resistance: 50m depth rating
- Movement type: Manual

Omega Speedmaster Moonwatch Hesalite - 3861 - 310.30.42.50.01.001 (new / 2025)
A brand new Omega Speedmaster Moonwatch Professional Hesalite with a stainless steel case and 3861 Omega Master Chronometer movement.
- Condition: Brand new
- Case size: 42mm diameter
- Movement: Omega Master Chronometer