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.

Buy Now on Jomashop

This is an affiliate link

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 Professional 🌘 Moonwatch 🌒 Sapphire Sandwich LNIB 9/25

Omega - 310.30.42.50.01.002 · $6,875

A Omega Speedmaster Professional in like new condition with a sapphire sandwich case and reference number 310.30.42.50.01.002.

Condition: Like new
Missing items: outer box, user's manual, Moonwatch booklet, outer pillow

Posted at

Apr 22, 2026, 11:58 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Professional Reverse New Apr 2026, $10.2k

Omega - 310.30.42.50.01.004 · $10,200

This Omega Speedmaster Professional Reverse is a brand new watch with a reference number of 310.30.42.50.01.004, coming with its original box and April 2026 warranty.

Condition: Brand New
Shipping cost: $200 for USA shipping
Payment methods: Wire or Credit Card (+4.9% and 4 days clearance)
Warranty: Apr 2026 warranty

Posted at

Apr 22, 2026, 9:55 AM

Active

View listing on r/WatchExchange

2021 Omega Speedmaster Racing 329.32.44.51.01.001 Orange Full Set - $6,495

Omega - 329.32.44.51.01.001 · $6,495

A 2021 Omega Speedmaster Racing in excellent condition with minimal signs of wear, featuring a orange full set including the watch, inner and outer box, card holder, international warranty card, pictograms card, master chronometer card, and instructions manual.

Condition: Excellent condition with minimal signs of wear
Year: 2021
Contents: Watch, Inner & Outer Box, Card Holder, International Warranty Card, Pictograms Card, Master Chronometer Card, Instructions Manual
Shipping Method: Fedex

Posted at

Apr 22, 2026, 9:47 AM

Active

View listing on r/WatchExchange

2024 OMEGA SPEEDMASTER WHITE DIAL 310.30.42.50.04.001 $7299

OMEGA - 310.30.42.50.04.001 · $7,299

2024 OMEGA SPEEDMASTER WHITE DIAL for sale

Posted at

Apr 22, 2026, 9:23 AM

Active

View listing on r/WatchExchange

OMEGA Speedmaster Professional Moonwatch Sapphire Sandwich 311.30.42.30.01.006 Full Set

OMEGA - 311.30.42.30.01.006 · $6,300

The OMEGA Speedmaster Professional Moonwatch Sapphire Sandwich is a highly sought-after watch featuring a sapphire crystal configuration, display caseback, and classic Moonwatch design.

Condition: Mint condition with hairline scratches on clasp and around the case
Band type: Original bracelet, nylon strap

Posted at

Apr 22, 2026, 1:38 AM

Active

View listing on r/WatchExchange

2021 Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 Full set Excellent condition

Omega - 310.30.42.50.01.002 · $6,400

The Omega Speedmaster Professional Moonwatch is a historic watch that has been in high demand since the Artemis missions. It comes with its full set, including papers and cards.

Condition: Excellent condition
Papers: Full set of documents and booklets, including the legendary moonwatch booklet

Posted at

Apr 22, 2026, 12:13 AM

Active

View listing on r/WatchExchange

Omega Speedmaster “First Omega in Space” 39.7mm

Omega - 310.32.40.50.06.001 · $6,700

This Omega Speedmaster "First Omega in Space" is a historically significant variant that pays tribute to the first Omega ever worn in space by astronaut Wally Schirra on October 3rd, 1962. The watch features a symmetrical design with straight lugs and a black aluminium bezel with a tachymeter scale.

Condition: Excellent
Case size: 39.7mm diameter
Movement type: Manually wound
Water resistance depth: 50m

Posted at

Apr 21, 2026, 10:25 PM

Active

View listing on r/WatchExchange