Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Bracelet

Reference 310.30.42.50.01.001

Omega Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Bracelet

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.
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MSRP: $7,000
Market Price: $5,141

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 Omega Buckle

Omega Speedmaster Reduced 3510.50 Omega Buckle

Omega - 3510.50 · $2,075
For sale is an Omega Speedmaster Reduced in great condition with a nice patina on the dial.

  • Condition: great condition with some patina on the dial and wear on the strap and clasp
  • Band type: leather
  • Buckle type: Omega original
Posted at
Apr 17, 2026, 12:05 PM
Active
View listing on r/WatchExchange
[WTS][US] Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - 311.30.40.30.01.001 - Full Set

[US] Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - 311.30.40.30.01.001 - Full Set

Omega - 311.30.40.30.01.001 · $15,700
Up for sale is an Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - Full Set, functions perfectly mechanically without issue.

  • Condition: pristine condition with minor hairlines on clasp, case, and bracelet
  • Case size: 39.7mm
  • Bracelet condition: pristine condition with minor hairlines on clasp, case, and bracelet
Posted at
Apr 17, 2026, 6:20 AM
Active
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[WTS][US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set

[US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set

Omega - 310.30.42.50.04.001 · $8,000
Up for sale is an Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set Watch is in pristine condition and functions perfectly mechanically, without issue.

  • Condition: pristine with minor hairlines on clasp, case, and bracelet
  • Case size: 42mm diameter
Posted at
Apr 17, 2026, 6:14 AM
Active
View listing on r/WatchExchange
[wts] 2025 Omega Speedmaster Chronoscope 329.30.43.51.03.001 $6599

2025 Omega Speedmaster Chronoscope 329.30.43.51.03.001 $6599

Omega - 329.30.43.51.03.001 · $6,599
  • Model name: Speedmaster Chronoscope
Posted at
Apr 17, 2026, 1:09 AM
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[WTS] Omega Speedmaster Date 3212.80

Omega Speedmaster Date 3212.80

Omega - 3212.80 · $1,999
A beautiful blue Omega Speedy Date 3212.80 in overall good condition with some minor imperfections.

  • Condition: Good condition with normal wear and scratches on the aluminum bezel
  • Bracelet size fits about: 7 inches
  • Movement: Cal 1164
  • Case diameter: 40mm
Posted at
Apr 16, 2026, 9:36 PM
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[WTS] 2010 / Omega / Speedmaster date / Silver Dial / 40mm

2010 / Omega / Speedmaster date / Silver Dial / 40mm

Omega - 3211.30 · $3,500
A 2010 Omega Speedmaster date model featuring a silver dial and 40mm case.

  • Condition: Excellent Condition
  • Case Size: 40mm
Posted at
Apr 16, 2026, 7:20 PM
Active
View listing on r/WatchExchange
[WTS] 2022 OMEGA Speedmaster Chrono 38 324.30.38.50.03.001 Full Set Mint Sun Brushed Blue Dial $4975

2022 OMEGA Speedmaster Chrono 38 324.30.38.50.03.001 Full Set Mint Sun Brushed Blue Dial $4975

OMEGA - 324.30.38.50.03.001 · $4,975
The OMEGA Speedmaster Chrono 38 is a modern take on the iconic chronograph, featuring a sunburst blue dial and a versatile 38mm case size.

  • Condition: Mint / Like New
  • Case Size: 38mm
  • Movement: Automatic Chronograph (Omega Caliber 3330)
  • Bracelet Length: 20.5 links
Posted at
Apr 16, 2026, 6:51 PM
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[WTS] PRICE DROP Omega SpeedMaster 38 324.30.38.50.02.001 Complete Set Excellent Condition

PRICE DROP Omega SpeedMaster 38 324.30.38.50.02.001 Complete Set Excellent Condition

Omega - 324.30.38.50.02.001 · $4,598
The Omega Speedmaster 38 offers a refined take on the legendary Speedmaster design, combining classic chronograph heritage with a more versatile and wearable case size.

  • Condition: Excellent Condition
  • Case Size: 38mm
  • Case Material: Stainless Steel
  • Bezel: Fixed Tachymeter
Posted at
Apr 16, 2026, 5:51 PM
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[WTS] PIRCE DROP 2025 Omega Speedmaster Pilot Chronograph 40.85mm

PIRCE DROP 2025 Omega Speedmaster Pilot Chronograph 40.85mm

Omega - 332.10.41.51.01.002 · $7,648
The Omega Speedmaster Pilot Chronograph is a modern aviation-inspired chronograph that blends legendary Speedmaster DNA with a clean, instrument-driven design.

  • Case size: 40.85mm diameter
  • Case material: stainless steel
  • Dial color: matte black
Posted at
Apr 16, 2026, 5:34 PM
Active
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