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] BNIB 2026 Omega Speedmaster Professional White $7,899

BNIB 2026 Omega Speedmaster Professional White $7,899

Omega - 310.30.42.50.04.001 · $7,899
The Omega Speedmaster Moonwatch Professional features a glossy white lacquered dial, black markers, and red 'Speedmaster' text, with a modern and luxurious look thanks to its sapphire crystal. The 42mm case wears comfortably with a 5mm tapered bracelet. It's powered by the hand-wound Cal 3861 movement.

  • Condition: Brand new in box with no issues
  • Case size: 42mm diameter
  • Case thickness: 13.2mm
  • Lug width: 20mm
Posted at
Apr 23, 2026, 6:12 PM
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[WTS] Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.02.001

Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.02.001

Omega - 324.30.38.50.02.001 · $3,999
This Omega Speedmaster 38 Co-Axial Chronograph features a silver dial and comes with various accessories such as the original Omega stainless steel bracelet, inner box, outer box, instruction manual, pictograms card, Watchfinder certificate of authenticity, and an Omega Cream Watch Pouch.

  • Condition: Excellent overall condition with very minimal wear
  • Bracelet condition: Brand-new, unworn
  • Includes: Omega inner box, outer box, instruction manual, pictograms card, Watchfinder certificate of authenticity, cream watch pouch
Posted at
Apr 23, 2026, 6:05 PM
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[WTS] 2022 Omega Speedmaster Dark Side Of The Moon DSOTM "Pitch Black" reference 311.92.44.51.01.004 Box and Papers

2022 Omega Speedmaster Dark Side Of The Moon DSOTM "Pitch Black" reference 311.92.44.51.01.004 Box and Papers

Omega - 311.92.44.51.01.004 · $7,327
A bold and modern interpretation of the legendary Speedmaster, featuring an all-black aesthetic that delivers a sleek, stealthy presence on the wrist.

  • Condition: Excellent
  • Case size: 44.25mm
  • Movement: Manual-wind Co-Axial Caliber 1869
  • Crystal: Sapphire
Posted at
Apr 23, 2026, 3:42 PM
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[WTS] Omega Speedmaster Broadarrow. Strong Lume.

Omega Speedmaster Broadarrow. Strong Lume.

Omega - Speedmaster Broadarrow · $3,450
A Omega Speedmaster Broadarrow for sale in good condition, with strong lume and running well.

  • Shipping Method: Fedex with insurance
  • Shipping Location: NJ USA
  • Shipping Global Accepted: true
Posted at
Apr 23, 2026, 3:26 PM
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[WTS] Omega Speedmaster Dark Side of the Moon 44.25mm 310.92.44.51.01.002 ( new / 2025 / box and papers )

Omega Speedmaster Dark Side of the Moon 44.25mm 310.92.44.51.01.002 ( new / 2025 / box and papers )

Omega - 310.92.44.51.01.002 · $13,550
This Omega Speedmaster Moonwatch Dark Side of the Moon is a brand new watch on Nylon Fabric Strap with Ceramic Clasp, featuring a 44.25mm black ceramic case and Omega Co-Axial Calibre 9900.

  • Condition: Brand new
  • Case size: 44.25mm diameter
  • Movement: Omega Co-Axial Calibre 9900
Posted at
Apr 23, 2026, 2:11 PM
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[WTS] OMEGA Speedmaster 311.63.44.51.06.001 Dark Side of the Moon Matte Grey w/Box and cards

OMEGA Speedmaster 311.63.44.51.06.001 Dark Side of the Moon Matte Grey w/Box and cards

OMEGA - 311.63.44.51.06.001 · $11,000
A 2021 Omega Dark Side of the Moon Sedna Gold Accent 44mm watch, featuring a laser ablated matte grey dial and an 18k Sedna gold bezel, housed in a ceramic case. The timepiece is comfortable to wear due to its light and durable design.

  • Condition: good
  • Case material: ceramic
  • Case size: 44mm
  • Diameter: 44mm
Posted at
Apr 23, 2026, 12:27 PM
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[WTS] Omega Speedmaster Reduced "Michael Schumacher" Limited Edition, 3517.30.00. Card Included. Collector's watch. Clean..

Omega Speedmaster Reduced "Michael Schumacher" Limited Edition, 3517.30.00. Card Included. Collector's watch. Clean..

Omega - 3517.30.00 · $3,495
A collector's Omega Speedmaster Reduced 'Michael Schumacher' Limited Edition, reference number 3517.30.00, in clean condition.

  • Condition: Clean
  • Card included: yes
  • Shipping method: Fedex with insurance
Posted at
Apr 23, 2026, 12:23 PM
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[WTS] Omega Speedmaster Date 3211.31.00 — Panda Dial — Cal. 1164 (Fresh Service) — $2,550 Shipped (Tariff Covered)

Omega Speedmaster Date 3211.31.00 — Panda Dial — Cal. 1164 (Fresh Service) — $2,550 Shipped (Tariff Covered)

Omega - 3211.31.00 · $2,550
This Omega Speedmaster Date features a panda dial and is powered by Cal. 1164.

  • Condition: pre-owned - fresh service
  • Caliber: Cal. 1164
Posted at
Apr 23, 2026, 11:47 AM
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[WTS] Omega Speedmaster Date Chronometer 3210.50.00 — Cal. 1164 (Serviced) — $2,099 Shipped (Tariff Coverd)

Omega Speedmaster Date Chronometer 3210.50.00 — Cal. 1164 (Serviced) — $2,099 Shipped (Tariff Coverd)

Omega - 3210.50.00 · $2,099
This Omega Speedmaster Date Chronometer features a classic black dial with tri-compax layout, applied markers, and tachymeter bezel, making it a great everyday Speedmaster.

  • Condition: Honest wear consistent with age
  • Calibre: Omega Cal. 1164 (ETA 7750 base)
  • Movement status: Running within spec
  • Bracelet condition: Solid with no major stretch
Posted at
Apr 23, 2026, 11:25 AM
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