Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Kanjar Oman

Reference 310.30.42.50.01.003

Omega Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Kanjar Oman

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.
Buy Now on Jomashop
This is an affiliate link

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] 2006 OMEGA SPEEDMASTER RACING 32630405002001

2006 OMEGA SPEEDMASTER RACING 32630405002001

Omega - 32630405002001 · $1,900
2006 OMEGA SPEEDMASTER RACING is being sold.

  • Payment Methods: Zelle, Venmo, PayPal, wire transfer
Posted at
Dec 3, 2025, 3:36 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster 38 Chronograph 324.30.38.50.02.001 $4,200

Omega Speedmaster 38 Chronograph 324.30.38.50.02.001 $4,200

Omega - 324.30.38.50.02.001 · $4,200
For sale is my Omega Speedmaster 38mm chronograph in like new mint condition, complete with box and papers.

  • Condition: Like new, mint condition
  • Case Size: 38mm
Posted at
Dec 3, 2025, 2:31 PM
Active
View listing on r/WatchExchange
[WTS] 2024 Omega Speedmaster - First Omega in Space - 310.30.40.50.06.001 - full kit - factory warranty - very good condition

2024 Omega Speedmaster - First Omega in Space - 310.30.40.50.06.001 - full kit - factory warranty - very good condition

Omega - 310.30.40.50.06.001 · $6,950
A modern tribute to the first Omega worn beyond Earth's atmosphere, featuring a Master Chronometer-certified movement and unique hand designs.

  • Condition: Very good
  • Case Diameter: 39.7mm
  • Movement: Master Chronometer-certified 3861
Posted at
Dec 3, 2025, 1:58 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Professional White Dial Ref: 310.32.42.50.04.001

Omega Speedmaster Professional White Dial Ref: 310.32.42.50.04.001

Omega - 310.32.42.50.04.001 · $7,450
This Omega Speedmaster Professional Moonwatch features a white dial with red accents and is one of the seller's favorite takes on a classic.

  • Condition: New
  • Shipping: Free insured overnight shipping
  • Included items: Double boxed - inner and outer, 3 warranty cards, manual/booklet, travel case, pouch
  • Buyer perks: Open to trades, 3rd party escrow and authentication available, 12 month trade ins and buy backs, timegrapher testing
Posted at
Dec 3, 2025, 10:19 AM
Active
View listing on r/WatchExchange
[WTS][US] Omega Speedmaster Silver Snoopy - 50th Anniversary - 310.32.42.50.02.001 - Full Set - BRAND NEW

[US] Omega Speedmaster Silver Snoopy - 50th Anniversary - 310.32.42.50.02.001 - Full Set - BRAND NEW

Omega - 310.32.42.50.02.001 · $14,750
This Omega Speedmaster Silver Snoopy is a limited edition 50th anniversary watch that comes in its full set with box, manuals, and other accessories.

  • Condition: Brand new, pristine and unworn
  • Case size: 42mm diameter
  • Water resistance: 30m water resistant
Posted at
Dec 3, 2025, 8:38 AM
Active
View listing on r/WatchExchange
[WTS][US] Omega Speedmaster Chronoscope - White Panda Dial - 43mm - 329.30.43.51.02.002

[US] Omega Speedmaster Chronoscope - White Panda Dial - 43mm - 329.30.43.51.02.002

Omega - 329.30.43.51.02.002 · $5,175
A white panda dial Omega Speedmaster Chronoscope in 43mm size, with minor hairlines on the clasp and bracelet.

  • Condition: Fantastic
  • Diameter: 43mm
Posted at
Dec 3, 2025, 8:26 AM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Professional Moonwatch - 311.30.42.30.01.005 - Big Box - Great Condition

Omega Speedmaster Professional Moonwatch - 311.30.42.30.01.005 - Big Box - Great Condition

Omega - 311.30.42.30.01.005 · $4,750
A highly sought after Omega Speedmaster Professional Moonwatch 'Big Box' collector's set purchased in 2017, showing great pre-owned condition.

  • Condition: great pre-owned condition, some normal wear on the stainless steel strap and minor marks on hesalite crystal
  • Case diameter: 42mm
  • Band material: stainless steel
Posted at
Dec 2, 2025, 10:48 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Professional Moonwatch – Ref. 145.0022 / 345.0022 – Hesalite – Circa 2005 – Very Clean

Omega Speedmaster Professional Moonwatch – Ref. 145.0022 / 345.0022 – Hesalite – Circa 2005 – Very Clean

Omega - 145.0022 / 345.0022 · $4,000
This is a full-size 42mm manual-wind Moonwatch in very clean pre-owned condition with Hesalite crystal and strong movement.

  • Condition: Very clean pre-owned condition
  • Movement Type: Manual wind - Caliber 1861
  • Crystal Material: Hesalite
  • Bracelet Type: Stainless steel
Posted at
Dec 2, 2025, 6:16 PM
Active
View listing on r/WatchExchange
[WTS] OMEGA Speedmaster Hesalite 3861 May 2023 - $5600

OMEGA Speedmaster Hesalite 3861 May 2023 - $5600

OMEGA - 3861 · $5,600
This Omega Speedmaster Professional, also known as The Moonwatch, features a Hesalite crystal and is from May 2023. It comes with its original box, papers, and manual in excellent condition.

  • Condition: Excellent
  • Year Of Manufacture: 2023
  • Crystal Material: Hesalite
  • Bracelet Adjustment: micro adjust
Posted at
Dec 2, 2025, 2:58 PM
Active
View listing on r/WatchExchange