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

Omega Speedmaster Moonwatch 3861 - White - 310.30.42.50.04.001 ( new )
This is a brand new Omega Speedmaster Moonwatch Professional with a white dial and sapphire crystal on a stainless steel bracelet.
- Condition: Brand new
- Movement: Omega Master Chronometer Movement
- Case size: 42mm
- Material: Stainless Steel

Omega Speedmaster Moonwatch Sapphire - 3861 - 310.30.42.50.01.002 (new / 2025)
This is a brand new Omega Speedmaster Moonwatch Professional, featuring a 42mm stainless steel case and an Omega Master Chronometer movement.
- Condition: Brand new
- Case material: stainless steel
- Movement type: Omega Master Chronometer

2023 Omega Speedmaster Pro Moonwatch 42mm 310.30.42.50.01.002 Steel Black Dial
This is a 2023 Omega Speedmaster Professional Moonwatch with a stainless steel case and black dial, measuring 8.0inch in diameter on the wrist.
- Condition: Excellent
- Material: Stainless Steel
- Size: 40mm diameter
- Warranty: International Warranty card dated 2023 and Existing Factory warranty

Omega Speedmaster. First Omega In Space. New model! 2024yr! 310.30.40.50.06.001
This Omega Speedmaster First Omega In Space is an updated tribute to the pioneering timepiece worn in space on October 3rd, 1962, and captures the same 2nd generation Speedmaster style in modern form.
- Condition: Like New
- Movement type: Manual-Winding
- Dial color: Blue-Grey
- Bezel material: Aluminum

Omega Speedmaster Racing - 44.25mm - Orange - 329.32.44.51.01.001 (excellent)
This Omega Speedmaster Racing features a 44.25mm stainless steel case and a black and orange dial, with a Master Co-Axial movement.
- Condition: Excellent
- Case size: 44.25mm
- Movement: Master Co-Axial 9900 Chronometer

1998 Omega Speedmaster MK40 Triple Date Ref. 3520.53 with Box
The Omega Speedmaster MK40 Triple Date Ref. 3520.53 is a neo-vintage watch with a colorful dial, known as the 'HODINKEE Mark 40'. It's one of Omega's most complicated watches, featuring a beautiful and unique design.
- Condition: Excellent (little to no signs of wear)
- Movement: Automatic
- Case width: 39mm
- Strap length: 7.25"
Omega Speedmaster Professional Moon Watch Chronograph 3572.50
This Omega Speedmaster Professional Moon Watch Chronograph is a mechanical manual watch with a stainless steel case, chronograph function, and size of 42mm.
- Condition: 95%
- Case material: stainless steel
- Movement type: mechanical manual (1863)
- Size: 42mm

2022 Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 Sapphire
2022 Omega Speedmaster Professional Moonwatch in excellent condition with a full size bracelet.
- Condition: excellent, minor scratches on case and bracelet
- Bracelet type: full size
- Shipping method: FedEx Standard Overnight

Mint Omega SNOOPY Speedmaster 50th Anniversary Oct 2024 FULL SET
A 50th Anniversary Speedmaster Moonwatch with a Silver Snoopy Award, featuring a silver dial with blue subdials and a stainless steel case on a blue nylon fabric strap.
- Condition: Mint
- Case material: Stainless Steel
- Band material: Blue nylon fabric
- Strap type: Tang buckle