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 Racing 44mm Automatic](https://preview.redd.it/gi3v09aeu9wf1.jpg?width=640&crop=smart&auto=webp&s=7033db814682c77d45ae2e44f02e4caf3071dfa0)
Omega Speedmaster Racing 44mm Automatic
This Omega Speedmaster Racing is a pre-owned timepiece from 2018, featuring a leather strap with light wear and comes with its original packaging and documentation.
- Condition: very good condition
- Case size: 44mm
- Movement: automatic
![[WTS] 2025 Omega Speedmaster Silver Snoopy Award 50th Anniversary 310.32.42.50.02.001 - Brand New - $14,550](https://preview.redd.it/jzjn621i45wf1.jpg?width=640&crop=smart&auto=webp&s=379fec92bfa58a1cf98dd5d90d8a7fad4b6f025e)
2025 Omega Speedmaster Silver Snoopy Award 50th Anniversary 310.32.42.50.02.001 - Brand New - $14,550
The 2025 Omega Speedmaster Silver Snoopy Award 50th Anniversary watch is a highly sought-after edition with blue sub-dials and bezel, and a unique caseback.
- Condition: Brand New
- Year Of Manufacture: 2025
- Includes Accessories: yes, includes inner and outer box, cards, special loupe, cleaning cloth, instruction manuals
![[WTS] Omega OEM Deployant Clasp – Speedmaster Ref. 117Z017553 – Micro-Adjustment - 3861 Upgrade Kit](https://preview.redd.it/ldzei4kih4wf1.jpg?width=640&crop=smart&auto=webp&s=2369cb01e905eca1b412591f9b89792e44d81473)
Omega OEM Deployant Clasp – Speedmaster Ref. 117Z017553 – Micro-Adjustment - 3861 Upgrade Kit
This Omega OEM deployant clasp kit is designed for Speedmaster 3861 bracelets with or without micro-adjustment feature. It has a longer design than the stock 3861 bracelet clasp and features micro-adjustment for precise sizing.
- Condition: Excellent - minimal wear, fully functional
- Fitment: Omega Speedmaster bracelets
- Material: Stainless steel
- Feature: Micro-adjustment for precise sizing
![[WTS] Omega Speedmaster Mother Of Pearl Dial 3834.72.35 - Original Buckle & Handmade Strap (Serviced) only for 2200$ 🚢](https://preview.redd.it/ohh1jxk0o2wf1.jpg?width=640&crop=smart&auto=webp&s=3fdb8847c8654055b31a5ee0fa3b8e787638efa1)
Omega Speedmaster Mother Of Pearl Dial 3834.72.35 - Original Buckle & Handmade Strap (Serviced) only for 2200$ 🚢
A stainless steel Omega Speedmaster with a 39mm case size and mother of pearl dial featuring green Arabic numerals. The watch has been recently serviced and is working perfectly fine.
- Condition: Clean case, super clean dial and bezel
- Case Size: 39mm diameter
- Movement Type: Automatic
![[WTS] Omega Speedmaster BSOM Moonphase 304.93.44.52.03.002 (2021) | Complete Box & Papers | $10,999 Shipped](https://preview.redd.it/ykgcn3ddezvf1.jpg?width=640&crop=smart&auto=webp&s=337bb1f902d9d6b6ede35d2b8f61ca7a56ea3750)
Omega Speedmaster BSOM Moonphase 304.93.44.52.03.002 (2021) | Complete Box & Papers | $10,999 Shipped
The Omega Speedmaster “Blue Side of the Moon” (2021) is a stunning and underrated modern Speedmaster variant, crafted entirely from blue ceramic with a rich blue dial and Sedna gold accents.
- Condition: amazing condition overall
- Year: 2021
- Material: blue ceramic
- Movement: running strong and keeps excellent time
![[WTS] Omega Speedmaster Moonphase](https://preview.redd.it/ak3pag7abzvf1.jpg?width=640&crop=smart&auto=webp&s=b5ca98141a526191fa2ec5de4fddbc24bcad1ed6)
Omega Speedmaster Moonphase
Up for sale is an Omega Speedmaster Moonphase ref. 3575.20, which runs great and comes with full kit and documentation.
- Condition: excellent
- Warranty card included: true
- Shipping limited to conus: true
![[WTS] Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 – Full Kit – Excellent Condition – $5,900](https://preview.redd.it/rjkilui8vvvf1.jpg?width=640&crop=smart&auto=webp&s=e71f6fd1cd051c3d6a543e896d815fca9580395c)
Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 – Full Kit – Excellent Condition – $5,900
This Omega Speedmaster Professional Moonwatch is a highly sought-after model, known for its robust design and iconic status.
- Condition: Excellent Condition
- Movement: Automatic movement
![[wts] Omega Speedmaster racing 9900 44.25mm 329.33.44.51.01.001 under warranty](https://preview.redd.it/q82kwn8wurvf1.jpg?width=640&crop=smart&auto=webp&s=ac278341ea2ff99a0bf17a292ba762194fbe1132)
Omega Speedmaster racing 9900 44.25mm 329.33.44.51.01.001 under warranty
This is a Omega Speedmaster racing watch, model 9900, featuring a 44.25mm case size and a factory warranty until OCT 2024.
- Condition: Good condition
- Case size: 44.25mm
- Warranty: Factory warranty until OCT 2024
![[WTS] Pristine Omega Speedmaster Sapphire Sandwich - Full Set!](https://preview.redd.it/sehyv6fmlrvf1.jpg?width=640&crop=smart&auto=webp&s=6c146d447624594f95ec5952c76987a3cbfb49cc)
Pristine Omega Speedmaster Sapphire Sandwich - Full Set!
A timeless and instantly recognizable watch, meticulously cared for by the seller over two years.
- Condition: Pristine
- Worn: 10-12 times over two years
- Crystal condition: Perfect
- Bezel condition: Perfect