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
![[WTS] Omega Speedmaster Reduced 3510.50](https://preview.redd.it/v7iodvet1qxf1.jpg?width=640&crop=smart&auto=webp&s=bb5cd57de182415095cbb03550dbd7507757cb88)
![[WTS] 🌘 BNIB 2025 Omega Speedmaster Sapphire 🌒](https://preview.redd.it/eelclta7xpxf1.jpg?width=640&crop=smart&auto=webp&s=cc263eed9708c69e0f4984ba4e83cf0dc74dbc09)
![[WTS] 2016 Omega Speedmaster Professional 311.30.42.30.01.005.](https://preview.redd.it/e5ysfymcsoxf1.jpg?width=640&crop=smart&auto=webp&s=9419d6467c7c0d0035778eba0fc5138c8c3d69af)
![[WTS] Omega Speedmaster Michael Schumacher 39mm (previously ebay authenticated with card) naked watch, have box not original box](https://preview.redd.it/w7cdc3g99kxf1.jpg?width=640&crop=smart&auto=webp&s=ac5800d6b60e719b3a4bc20b6398b4558118513f)
Omega Speedmaster Michael Schumacher 39mm (previously ebay authenticated with card) naked watch, have box not original box
This Omega Speedmaster Michael Schumacher edition is a naked watch without its original box. It has been eBay authenticated and comes with the authentication card.
![[WTS] Omega Speedmaster Professional White 42MM - Ref 310.30.42.50.04.001 - 04/25](https://preview.redd.it/g3s9l11b6jxf1.png?auto=webp&s=6ef41a7f4765739728857d021bbaa6bf6802fffa)
Omega Speedmaster Professional White 42MM - Ref 310.30.42.50.04.001 - 04/25
A 42MM Omega Speedmaster Professional White, a popular and highly sought-after model known for its reliability and style.
- Condition: preowned in fantastic condition
- Case size: 42mm
![[WTS] Omega Speedmaster FOIS 40mm Numbered Edition – Excellent Condition, New Lincoln Bracelet, Professional Ed White Mod, Box + Warranty Card](https://preview.redd.it/htgezn9t5ixf1.jpg?width=640&crop=smart&auto=webp&s=fd1288863d730097e3333a9401965e657277b24b)
Omega Speedmaster FOIS 40mm Numbered Edition – Excellent Condition, New Lincoln Bracelet, Professional Ed White Mod, Box + Warranty Card
Up for sale is my Numbered Editon Omega Speedmaster FOIS (First Omega in Space) in very good condition, featuring a professionally installed Ed White–style mod that gives it a beautifully vintage, classic Speedmaster look.
- Condition: Excellent overall with light, honest wear
- Bracelet: Uncle Seiko Lincoln bracelet, 6.75 inches long with extra links
- Case Size: 40mm diameter
![[WTS] Omega Speedmaster Moonphase](https://preview.redd.it/kj97olpvwhxf1.jpg?width=640&crop=smart&auto=webp&s=c6f68bf653993bcccf8041209784a0c7e17bc254)
Omega Speedmaster Moonphase
Up for sale is an Omega Speedmaster Moonphase ref. 3575.20 in excellent condition! Very minimal signs of wear, runs great and includes full kit.
- Condition: Excellent
- Shipping restrictions: CONUS only
![[WTS] 2023 Omega Speedmaster Moonwatch Professional | 310.30.42.50.01.002 | Complete | Sapphire Sandwich | Speedy | Micro-adjust Clasp](https://preview.redd.it/pl12srl1ghxf1.jpeg?auto=webp&s=80adef954fbabf6cfe72f0551d40d296b56bef1e)
2023 Omega Speedmaster Moonwatch Professional | 310.30.42.50.01.002 | Complete | Sapphire Sandwich | Speedy | Micro-adjust Clasp
A gorgeous watch highlighted by the two sapphire crystals, and makes for arguably the perfect daily; comfortable, simple, and practical.
- Condition: Excellent
- Reference type: Professional
- Crystal material: Sapphire
- Movement: Calibre GA
![[WTS] NEW 2025 Omega Speedmaster Professional Moonwatch ‘Silver Snoopy Award’ - Ref. 310.32.42.50.02.001 - $14,430](https://preview.redd.it/ie4x7g353gxf1.jpg?width=640&crop=smart&auto=webp&s=a96d0bd83c09703d5d3b5f70756e03d4fac77d23)
NEW 2025 Omega Speedmaster Professional Moonwatch ‘Silver Snoopy Award’ - Ref. 310.32.42.50.02.001 - $14,430
The 'Silver Snoopy Award' 50th Anniversary edition Omega Speedmaster Professional Moonwatch features blue sub-dials and a bezel, along with a unique caseback.
- Condition: Brand New
- Year: 2025
- Set Contents: full set with inner + outer box, cards, special loupe, cleaning cloth and instruction manuals