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

2021 Omega Speedmaster Moonwatch 42mm 310.30.42.50.01.001 Steel Black Dial
This is a 2021 Omega Speedmaster Moonwatch 42mm watch with a stainless steel black dial and Hesalite crystal.
- Condition: Excellent overall condition
- Original boxed: true
- Papers included: true
- Warranty card date: 2021
![[WTS] New 2025 Omega Speedmaster Moonwatch Professional Hesalite Black Dial Full 4/25 Ref: 310.30.42.50.01.001](https://preview.redd.it/qxx3cchjqswe1.jpg?width=640&crop=smart&auto=webp&s=247b444a114741c6e64ff6723185ee1694e0d0cd)
![[WTS] Omega Speedmaster Sapphire Sandwich 1863 - $3800](https://external-preview.redd.it/qICttatbgz30jTLEXLY-wfBZSH-q3XGnw-4tQ5ZGqLw.jpg?auto=webp&s=5abbf6db4361696a93d139301905ee413cd5b9c7)
Omega Speedmaster Sapphire Sandwich 1863 - $3800
A classic watch that works in any situation, comes as watch only, and fits up to 7.5" wrist.
- Condition: Excellent, works as expected
- Wrist size compatibility: up to 7.5 inches
Omega Speedmaster Moonphase Two Tone
A beautiful Omega Speedmaster triple date, two tone, moon phase watch with a silky white dial and gold bezel.
- Condition: Good condition with normal wear on the case and bezel
- Case size: 39mm diameter
- Movement: Cal 1152
- Accessories: None
![[WTS] Omega Speedmaster Moonphase Two Tone](https://external-preview.redd.it/g3AdF5mSqh2pBNByX3Dv6Pbypl38Bty3ol_hvaw56f8.jpeg?auto=webp&s=632b9c92f14c5e8e19cba5659a9b5ff0d1a75c11)
Omega Speedmaster Moonphase Two Tone
A beautiful Omega Speedmaster triple date, two tone, moon phase watch with a silky white dial and gold bezel.
- Condition: overall good condition for its age with some normal wear on the case and bezel
- Movement: Cal 1152
- Case size: 39mm diameter
![[WTS] Omega Speedmaster Triple Date 3521.30](https://external-preview.redd.it/UAhzlrmQ3dl3Sp9F0AqBr23uABb2CltfS-DPbKv-Rw0.jpeg?auto=webp&s=c3c7362a6d6842514cd34d86a7f060a68ca49761)
Omega Speedmaster Triple Date 3521.30
This Omega Speedmaster Triple Date features a white dial, 3 date complication, and is one of the reduced versions of the speed master.
- Condition: Very good condition for its age with some normal wear on the case bezel and bracelet
- Movement: 1150
- Size: 39mm
- Accessories: N/A
![[WTS] Omega Speedmaster Professional Sapphire 1863 311.30.42.30.01.006 - $4,150](https://external-preview.redd.it/kEGoBmFW8GKki38hBVu145eaMQs2xAUfPOElgXnolr0.jpeg?auto=webp&s=def0815820d016ff6ede80248cee60b42fcd51b4)
Omega Speedmaster Professional Sapphire 1863 311.30.42.30.01.006 - $4,150
This Omega Speedmaster Moonwatch Professional is a 42mm watch that functions perfectly mechanically and comes in amazing condition.
- Condition: Amazing condition
- Bracelet size fits wrist: 6.5 inches
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