Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Kanjar Oman
Reference 310.30.42.50.01.003
About this watch
The Omega Speedmaster Professional Moonwatch 3861 is a piece of history wrapped around your wrist, with its rich lineage and modern upgrades capturing the hearts of watch enthusiasts and collectors alike. This manual-winding chronograph movement features a co-axial escapement and silicon balance spring, making it resistant to magnetic fields up to 15,000 gauss. The plexi glass provides a warm, vintage feel that many collectors adore, while the stainless steel case measures 42mm in diameter and has a water resistance of 50 meters. This timepiece is perfect for everyday wear, suitable for both formal and casual occasions. With its stunning design, robust movement, and versatility, it's a celebration of heritage, precision, and style.
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Key Features
- Omega Caliber 3861 Movement
- Plexi Glass with Vintage Feel
- 42mm Stainless Steel Case
- 50m Water Resistance
- Manual-Winding Chronograph Function
- Co-Axial Escapement and Silicon Balance Spring
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Kanjar Oman
- Reference
- 310.30.42.50.01.003
- 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][US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW](https://preview.redd.it/an2g2lh3ab3h1.jpg?width=640&crop=smart&auto=webp&s=11c7c47269d4d777335c37aaff808c8ac8572f05)
[US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW
This Omega Speedmaster Moonwatch Professional is a Reverse Panda model with a 42mm case size.
- Condition: Brand new, unworn
- Case size: 42mm diameter
- Water resistance: unknown
![[WTS] Omega Speedmaster 323.10.40.40.04.001 Specialities 2012 Olympic Games Collection Blue Red Hands | Good Condition | Serviced| 2200$](https://preview.redd.it/9ab6o8r76b3h1.jpg?width=640&crop=smart&auto=webp&s=8d5cbad4c44fbb86984ebfa31706442d33bfe721)
Omega Speedmaster 323.10.40.40.04.001 Specialities 2012 Olympic Games Collection Blue Red Hands | Good Condition | Serviced| 2200$
This Omega Speedmaster features a white dial with red and blue hands, part of the 2012 Olympic Games Collection.
- Condition: Good Condition
- Case size: 39mm
- Crystal type: Sapphire
- Lug width: 20mm
![[WTS] Memorial Day Weekend Sale – Omega Speedmaster Professional 3861 Sapphire (2022) – Full Set – Original Clasp + Micro-adjust Clasp – $6295 + shipping](https://preview.redd.it/w4q7rowkwa3h1.jpg?width=640&crop=smart&auto=webp&s=c4a131b3aec103749061f69e0e3630342b13759e)
Memorial Day Weekend Sale – Omega Speedmaster Professional 3861 Sapphire (2022) – Full Set – Original Clasp + Micro-adjust Clasp – $6295 + shipping
The modern Speedmaster features the METAS-certified 3861 movement and comes in a full set including both the newer micro-adjust clasp and original clasp.
- Condition: Excellent with light signs of wear
- Case material: Sapphire
- Movement certification: METAS-certified
![[WTS] 2025 Omega Speedmaster Moonwatch Professional White 42mm 310.30.42.50.04.001 — Excellent Condition, Box & Papers](https://preview.redd.it/ngjbzpswr61h1.jpeg?auto=webp&s=c3c31ccf1127bd5acee8e3e1b48b66b532c76659)
2025 Omega Speedmaster Moonwatch Professional White 42mm 310.30.42.50.04.001 — Excellent Condition, Box & Papers
The Omega Speedmaster Moonwatch Professional White features a striking white lacquered dial, classic asymmetrical case, and manually wound chronograph movement. It measures 42mm in diameter and comes complete with its original box and papers.
- Condition: Excellent condition with minor signs of wear on clasp and case
- Case size: 42mm diameter
- Lug to lug length: 47.5mm
- Thickness: 13.2mm
![[WTS] ALL THE GOLD! Rare Vintage 18K Omega Speedmaster Tribute to Astronauts Ref BA145.022 Unpolished Collector Example!](https://preview.redd.it/dn0ocdsec73h1.jpg?width=640&crop=smart&auto=webp&s=7b533b398420aadad9643a39db172204a97e81df)
ALL THE GOLD! Rare Vintage 18K Omega Speedmaster Tribute to Astronauts Ref BA145.022 Unpolished Collector Example!
A rare vintage Omega Speedmaster Tribute to Astronauts in solid gold, one of only 1014 made starting in November 1969.
- Condition: Unpolished, all original with incredible patina forming on the gold
- Case size: 42MM diameter
- Bracelet length: 7.5 inches
- Movement: Lemania-based hand wound caliber 861
![[WTS] Omega Speedmaster Professional Moonwatch Hesalite – Full Set -$3500](https://preview.redd.it/41ml0tj6763h1.jpg?width=640&crop=smart&auto=webp&s=ef0ffebfc8b95012290404f8acc03d235af86bb0)
Omega Speedmaster Professional Moonwatch Hesalite – Full Set -$3500
For sale is my Omega Speedmaster Professional Moonwatch, reference 311.30.42.30.01.005.
- Condition: very good condition
- Year purchased: 2018
![[WTS] Omega Speedmaster. 39mm. Special Dial.](https://preview.redd.it/k1f6z2bt263h1.jpeg?auto=webp&s=4a846f1e529ad8994e9cef2b32ce20c63a51aa7e)
Omega Speedmaster. 39mm. Special Dial.
A 39mm Omega Speedmaster with a special dial is being sold. The watch has a gorgeous texture dial and comes from the owner's collection.
- Diameter: 39mm
![[WTS] Omega Speedmaster “Speedy Tuesday” Ultraman 311.12.42.30.01.001 Like New](https://preview.redd.it/rgdj1s73w53h1.jpeg?auto=webp&s=c97f697cd0fcefc5dda86c078f4817cc1c4f77a8)
Omega Speedmaster “Speedy Tuesday” Ultraman 311.12.42.30.01.001 Like New
This Omega Speedmaster 'Speedy Tuesday' Ultraman is in like new condition, featuring a sapphire speedmaster bracelet and multiple straps.
- Condition: Like New
- Bracelet type: Sapphire speedmaster
- Case condition: Case-back sticker
- Straps included: Nato strap & leather strap
![[WTS] Omega Speedmaster Date](https://preview.redd.it/jolb9pl6x43h1.jpg?width=640&crop=smart&auto=webp&s=3d3a39020f98af1b763db440a47405ed1d1365cc)
Omega Speedmaster Date
A beautiful, reliable Omega Speedmaster Date with a stunning grey sunburst dial. It has been well cared for and comes with documentation and authentication.