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

Reference 310.30.42.50.01.001

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

Omega Speedmaster Professional Moonphase

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Up for sale is an Omega Speedmaster Professional Moonphase reference 3575.20, featuring date, chronograph, tachymeter and moonphase functions in a 42mm case with 18k white gold bezel.

  • Condition: excellent
  • Case size: 42mm
  • Movement: 1866 manual wind movement
  • Production years: 2000-2005
Posted at
Feb 1, 2025, 9:36 AM
Active
Omega Speedmaster Professional Chronograph Moonphase 3576.50

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This Omega Speedmaster Professional Chronograph Moonphase features a 42mm stainless steel case and is powered by a mechanical manual movement.

  • Condition: 90%
  • Size: 42mm diameter
  • Case material: Stainless Steel
  • Movement type: Mechanical Manual (1866)
Posted at
Feb 1, 2025, 8:48 AM
Active
Omega Speedmaster Moonwatch 3861 - White - 310.30.42.50.04.001 ( new )

Omega Speedmaster Moonwatch 3861 - White - 310.30.42.50.04.001 ( new )

This Omega Speedmaster Moonwatch Professional features a white dial, 42mm stainless steel case, and is powered by the Omega Master Chronometer movement.

  • Condition: Brand new
  • Case size: 42mm
  • Movement: Omega Master Chronometer
Posted at
Jan 31, 2025, 3:12 PM
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1995 Omega Speedmaster Professional Ref. 3590.50 with Box & Papers

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Omega - 3590.50 · $4,500
A sought-after 1995 Omega Speedmaster Professional Ref. 3590.50 with a unique vintage charm, powered by the reliable Caliber 861 and paired with a comfortable bracelet.

  • Condition: Excellent (little to no signs of wear)
  • Case width: 42mm
  • Movement: Manual Cal. 861
  • Year: 1995
Posted at
Jan 31, 2025, 1:29 PM
Active
2008 Omega Speedmaster 'Reduced' Ref. 3539.50 with Box & Papers

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Omega - 3539.50 · $3,850
The 2008 Omega Speedmaster 'Reduced' Ref. 3539.50 is a great entry into the Omega brand, measuring at 39mm and featuring a scratch-resistant sapphire crystal and fold-over clasp.

  • Condition: Excellent (very little to no signs of wear)
  • Case width: 39mm
  • Movement: Automatic
  • Strap length: 7.50"
Posted at
Jan 31, 2025, 1:22 PM
Active
2017 Omega Speedmaster Moonphase 44.25mm Blue Dial - 304.33.44.52.03.001 - B&Ps

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This Omega Speedmaster Moonphase features a stainless steel case, deep blue ceramic bezel, and a dial with a detailed moonphase.

  • Condition: Very Good Condition - Minimal wear
  • Case size: 44.25mm diameter
  • Movement: Caliber 9904
Posted at
Jan 30, 2025, 7:57 PM
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Omega Speedmaster professional moonwatch

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This Omega Speedmaster Professional Moonwatch is a highly sought after model from August 2020, featuring a stainless steel case and a black dial.

  • Condition: amazing condition
  • Caliber: 1861 movement
  • Case material: Stainless Steel
  • Glass type: Hesalite
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Jan 30, 2025, 7:43 PM
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2020 Omega Speedmaster FOIS Ref: 311.32.40.30.01.001 with B+P (Modded Dial)

2020 Omega Speedmaster FOIS Ref: 311.32.40.30.01.001 with B+P (Modded Dial)

A 2020 Omega Speedmaster First Omega In Space "FOIS" with a modded dial, featuring an authentic Omega black chronograph dial and applied logo for a vintage charm.

  • Condition: Excellent
  • Case size: 40mm
  • Serial number: 78,8XX,XXX
  • Edition number: 14xxx
Posted at
Jan 30, 2025, 7:20 PM
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1999 Omega Speedmaster Broad Arrow Ref: 3594.50 with Box and Papers

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Omega - 3594.50 · $3,850
A 1999 Omega Speedmaster Broad Arrow with a 42mm case and excellent condition stainless steel bezel, black dial, and broad arrow hands. It comes with the original box, papers, booklet holder, and warranty card.

  • Condition: Excellent
  • Case size: 42mm
  • Bracelet links: 15
  • End links: 840
Posted at
Jan 30, 2025, 7:18 PM
Active