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 ’57 331.10.42.51.01.002
This Omega Speedmaster '57 Co-Axial Chronograph features a 41.5mm stainless steel case, black dial with twin-register chronograph layout, and is powered by Omega's in-house Co-Axial calibre 9300 movement.
- Condition: Excellent pre-owned condition
- Case size: 41.5mm diameter
- Movement: Co-Axial calibre 9300 with 60-hour power reserve
- Bracelet material: stainless steel
![[WTS] Omega Speedmaster Professional 3590.50 - $3495 Shipped ✈️](https://external-preview.redd.it/YDKPbCLnq2CD-04Z9ajIvdGZJ1ZwaLlPCX5fKNuqbtg.jpeg?auto=webp&s=f343a974e96c0cfbf3f35217282a2d6d432d65e7)
Omega Speedmaster Professional 3590.50 - $3495 Shipped ✈️
This Omega Speedmaster Professional features a Tritium dial and Cal 861 movement, with all functions working well.
- Condition: Excellent (Watch runs well, all functions work)
- Size: 7.5 inch wrist size
- Location: Conus (USA)
![[WTS] Omega Speedmaster Professional Moonwatch ( 310.30.42.50.01.001 ) - Full Kit - Reduced](https://external-preview.redd.it/4Qhrnoh_aF2m2H78zKWw2DzYOwEnTK-L9f3QMUs_Uy8.jpeg?auto=webp&s=7dd0ad6f799d38afd673f22607a47d9dffd16ece)
Omega Speedmaster Professional Moonwatch ( 310.30.42.50.01.001 ) - Full Kit - Reduced
This Omega Speedmaster Professional is a 42mm watch with a full kit. It has been used but is in great condition, with some small scratches around the watch and on the bracelet.
- Condition: Great condition, some small scratches
- Bracelet condition: Little to no scratches
- Payment methods: Bank Wire, paypal f&f
![[WTS] Omega Speedmaster Reduced 3511.12 Yellow JAPAN 🇯🇵 EXCLUSIVE](https://preview.redd.it/qejmeacx18ze1.jpeg?auto=webp&s=e40ff5bdc522a5ed204a2d7c10a92ca153cde7c7)
Omega Speedmaster Reduced 3511.12 Yellow JAPAN 🇯🇵 EXCLUSIVE
Additional Details: Omega Speedmaster Reduced, watch comes with box and booklet, 7" bracelet
- Bracelet length: 7 inch
- Box and papers included: yes

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