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

Current Listings

OMEGA Speedmaster '57 Heritage, George Clooney, Neovintage Chrono, rare automatic version

OMEGA - 331.10.42.51.01.002 · $4,200

The OMEGA Speedmaster '57 Heritage is a rare automatic version that bridges two worlds: precision instrument and personal treasure. It features a black dial with beige indices, sub-dials at 9 and 3 o'clock, and recessed hour markers with Super-LumiNova.

Condition: pre-owned with minor cosmetic flaws (AR coating mark)
Case size: 41.5mm diameter
Movement type: automatic chronograph

Posted at

Oct 21, 2025, 3:38 PM

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Omega Speedmaster Triple Date 3220.50 - 40mm - $2350

Omega - 3220.50 · $2,350

This Omega Speedmaster Triple Date 3220.50 features a classic look with additional Chronometer functionality, available for sale in very good condition.

Condition: Very good pre-owned condition
Case diameter: 40mm
Crystal condition: clean
Bracelet condition: desk rash, minor scratches

Posted at

Oct 21, 2025, 2:55 PM

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[US] Omega Speedmaster First Omega in Space - FOiS - 310.30.40.50.06.001 - Full Set - Brand New

Omega - 310.30.40.50.06.001 · $7,450

This Omega Speedmaster First Omega in Space watch is a brand new timepiece that comes with a full set, including the watch itself, box, historical manual, user manual, microfiber cloth, and other accessories. It features a fantastic condition with only stickers on the case and clasp.

Condition: Brand New
Case size: 40mm diameter
Serial number included: true

Posted at

Oct 21, 2025, 9:11 AM

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Omega Speedmaster 3861 Hesalite (6k)and Sapphire (7k) 🔥Brand New 2024🔥

Omega - 3861 Hesalite and Sapphire · $6,000

This listing is for a Brand New Omega Speedmaster 3861, available in both Hesalite and Sapphire crystal options. The watch comes complete with its original box, warranty card dated 2024, and other accessories.

Condition: Brand New
Material: Hesalite and Sapphire
Year: 2024

Posted at

Oct 21, 2025, 8:23 AM

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Omega Speedmaster Professional Sapphire Sandwich ref. 310.30.42.50.01.002

Omega - 310.30.42.50.01.002

Type: Sapphire Sandwich ref.

Posted at

Oct 20, 2025, 7:51 PM

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Omega Speedmaster Racing 44mm Automatic

Omega - 329.32.44.51.01.001 · $6,500

This Omega Speedmaster Racing is a pre-owned timepiece from 2018, featuring a leather strap with light wear and comes with its original packaging and documentation.

Condition: very good condition
Case size: 44mm
Movement: automatic

Posted at

Oct 20, 2025, 9:49 AM

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2025 Omega Speedmaster Silver Snoopy Award 50th Anniversary 310.32.42.50.02.001 - Brand New - $14,550

Omega - 310.32.42.50.02.001 · $14,550

The 2025 Omega Speedmaster Silver Snoopy Award 50th Anniversary watch is a highly sought-after edition with blue sub-dials and bezel, and a unique caseback.

Condition: Brand New
Year Of Manufacture: 2025
Includes Accessories: yes, includes inner and outer box, cards, special loupe, cleaning cloth, instruction manuals

Posted at

Oct 19, 2025, 5:57 PM

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Omega OEM Deployant Clasp – Speedmaster Ref. 117Z017553 – Micro-Adjustment - 3861 Upgrade Kit

Omega - 117Z017553 · $220

This Omega OEM deployant clasp kit is designed for Speedmaster 3861 bracelets with or without micro-adjustment feature. It has a longer design than the stock 3861 bracelet clasp and features micro-adjustment for precise sizing.

Condition: Excellent - minimal wear, fully functional
Fitment: Omega Speedmaster bracelets
Material: Stainless steel
Feature: Micro-adjustment for precise sizing

Posted at

Oct 19, 2025, 3:48 PM

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Omega Speedmaster Mother Of Pearl Dial 3834.72.35 - Original Buckle & Handmade Strap (Serviced) only for 2200$ 🚢

Omega - 3834.72.35 · $2,200

A stainless steel Omega Speedmaster with a 39mm case size and mother of pearl dial featuring green Arabic numerals. The watch has been recently serviced and is working perfectly fine.

Condition: Clean case, super clean dial and bezel
Case Size: 39mm diameter
Movement Type: Automatic

Posted at

Oct 19, 2025, 9:41 AM

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