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
Omega Speedmaster Triple Date Calendar Moonphase 18k Ref. 175.0034
Omega's Speedmaster Day-Date Moonphase features a white dial, chronograph, date, day, and moon phase functions in an 18K yellow gold case with a size of 39mm.
- Condition: 90%
- Case material: 18K Yellow Gold
- Movement type: Mechanical Automatic
2021 OMEGA Speedmaster Racing - 326.30.40.50.01.001326.30.40.50.01.001
A 2021 OMEGA Speedmaster Racing, featuring a 40mm stainless steel case with scratch-resistant sapphire crystal and 100m water resistance.
- Condition: Like New
- Case Size: 40mm diameter
- Material: stainless steel
- Crystal: scratch-resistant sapphire crystal

Omega Speedmaster Racing - White Dial - 329.30.44.51.04.001 ( new / 2025 )
This Omega Speedmaster Racing Master Co-Axial features a white dial and stainless steel case.
- Condition: Brand new
- Case size: 44.25mm
- Movement type: Master Co-Axial 9900 Chronometer
Omega Speedmaster Professional Man on The Moon 3572.50
This Omega Speedmaster Professional Man on the Moon watch is approximately 20 years old, featuring nice patina hour markers and an open case back to view the manual wind movement.
- Age: around 20 years
- Case size: 42mm diameter
- Box included: true

Omega SPEEDMASTER PROFESSIONAL MOONWATCH 3861 SAPPHIRE 2023 COMPLETE SET
A 42mm stainless steel Omega Speedmaster Professional Moonwatch with a 3861 movement and sapphire crystals, purchased from an authorized dealer in 2023.
- Condition: Excellent Condition
- Movement: Manual-Winding Chronograph 3861 with Co-Axial Escapement
- Case size: 42mm
- Crystals: Sapphire Crystals

>>ReDuCeD<< OMEGA SPEEDMASTER PROFESSIONAL PRE-MOON 145.022-69
This is a pre-moon Omega Speedmaster Professional with calibre 861, featuring a 42mm diameter case and generic tan strap.
- Condition: Good vintage condition
- Movement: Omega calibre 861
- Case size: 42mm in diameter
- Serial number: 29 million from 1970

Omega Speedmaster Professional Tokyo 2020 522.30.42.30.03.001
This Omega Speedmaster Professional Tokyo 2020 is in excellent condition and comes with original boxes and books.
- Condition: Excellent condition
- Warranty card: no warranty card

2022 Omega Speedmaster Pro. Moonwatch 42mm 310.30.42.50.01.002 Black Dial
This is a 2022 Omega Speedmaster Professional Moonwatch with a 42mm stainless steel black dial.
- Condition: Excellent overall condition
- Size: 8.0 inch wrist (Full Links)
- Inclusions: Original Double Omega boxed,Box and Papers,International Warranty card dated 2022,5 year manufacturer warranty,Pictograms & Master Chronometer cards,Operating Instructions,Speedmaster Legendary Moonwatch Booklet,Cleaning Cloth
- Warranty: 5 year manufacturer warranty

NEW 2021 Omega Speedmaster Moonwatch "Ed White" 39.7mm 311.30.40.30.01.001 Black
A new Omega Speedmaster Moonwatch "Ed White" with a black dial, featuring a 39.7mm case size.
- Condition: Brand New/Unworn
- Box And Papers: Yes
- Warranty: 5 year manufacturer warranty
- Size: 8.0inch wrist (Full Links)