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

2023 Omega Speedmaster Calibre 321 “Ed White” 311.30.40.30.01.001 — Excellent Condition, Box & Papers

Omega - 311.30.40.30.01.001

2023 Omega Speedmaster Calibre 321 'Ed White' in excellent condition, including box and papers.

Condition: Excellent Condition

Posted at

Jan 22, 2026, 8:22 AM

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Omega Speedmaster Legend Schumacher edition ref 3506.61 MINT (box + warranty/picto/chronometer cards)

Omega - 3506.61 · $4,400

This Omega Speedmaster Legend Schumacher edition features a red dial, special collection engraved case back and is in mint condition with all original accessories.

Condition: Mint (unworn)
Bracelet size: full links
Case back: special collection engraved

Posted at

Jan 21, 2026, 11:10 PM

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Omega Speedmaster Day-Date Reduced ref 3222.80 MINT (box + warranty card)

Omega - 3222.80 · $3,400

This Omega Speedmaster Day-Date is a stunning example of the reduced model, featuring day, date, month, chronograph, and 24-hour indicators with a vibrant blue dial and stainless steel bracelet. The watch includes original box, warranty card, and operating manual.

Condition: Mint (unworn)
Day-date: includes day, date, month, chronograph, and 24-hour indicators
Box: included in sale
Warranty-card: included in sale

Posted at

Jan 21, 2026, 9:18 PM

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Omega Speedmaster Professional 42mm 310.30.42.50.01.002 “Sapphire Sandwich” | 2024 Complete Set

Omega - 310.30.42.50.01.002 · $6,750

2024 Omega Speedmaster Professional 'Sapphire Sandwich' 42mm watch in great condition.

Condition: Pre-Owned, slight wear on bracelet and clasp, marks on lugs
Bracelet Links: 24
Service History: Unknown
Amp Error: -1 s/d 345+

Posted at

Jan 21, 2026, 8:07 PM

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Omega Speedmaster. Sapphire Sandwich. Coaxial. Automatic. Box, Papers.

Omega - 311.30.44.50.01.002 · $4,895

The Omega Speedmaster is a popular and iconic automatic watch featuring a sapphire sandwich design.

Box: true
Papers: true
Movement: coaxial automatic

Posted at

Jan 21, 2026, 7:25 PM

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Omega Speedmaster Racing Chronograph Silver Dial Watch 326.30.40.50.02.001 Complete Set

Omega - 326.30.40.50.02.001 · $5,895

The Omega Speedmaster Racing features a silver white dial, stainless steel case and bracelet, and chronograph movement, making it a striking and fresh take on the classic Moonwatch profile.

Condition: Excellent
Case Size: 40mm diameter
Movement Type: chronograph

Posted at

Jan 21, 2026, 3:06 PM

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Omega Speedmaster Black Fabric Strap

Omega - CWZ014117 · $240

A black fabric strap for the Omega Speedmaster Pro watch, available for sale with free shipping.

Condition: like new, never worn
Width: 20/16mm

Posted at

Jan 21, 2026, 10:32 AM

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Omega Speedmaster Professional Moonwatch "Sapphire Sandwich" 310.30.42.50.01.002 Brand New Fully Stickered / Triple Boxed

Omega - 310.30.42.50.01.002 · $8,199

The Omega Speedmaster Professional Moonwatch 'Sapphire Sandwich' is a black dial chronograph with sapphire crystal front and back, featuring the iconic tachymeter bezel and trio of subdials. The exhibition caseback shows off the Master Chronometer certified caliber 3861 movement. This watch maintains the asymmetrical lug design and twisted lugs that protect the chronograph pushers.

Condition: Brand new - fully stickered
Case size: 42mm
Bracelet type: Five-link stainless steel

Posted at

Jan 20, 2026, 8:26 PM

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