Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet

Reference 310.55.42.50.13.001

About this watch

The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet is a masterpiece of horology, blending art, history, and cutting-edge technology. Crafted from Sedna Gold, this watch boasts a unique color that's both warm and striking. Its round shape and sunburst brown finish give it a luxurious feel, while the diamond-set bezel adds a touch of elegance. The 3861 is equipped with a chronograph feature, allowing you to measure elapsed time with precision. At its heart lies the Omega caliber 3861, an updated version of the legendary caliber 861/1861, featuring a co-axial escapement and silicon balance spring for accuracy and reliability. Master Chronometer certified by METAS, this watch has undergone rigorous testing to withstand magnetic fields of up to 15,000 gauss. Its sleek design and exceptional craftsmanship make it a standout in any collection. Whether you're at a formal event or a casual outing, this watch is sure to turn heads.

Buy Now on Jomashop

This is an affiliate link

Key Features

Sedna Gold case
Manual-winding chronograph movement
Co-axial escapement and silicon balance spring
Master Chronometer certified by METAS
Diamond-set bezel
Water resistance up to 50 meters
42.00 mm diameter and 13.18 mm height

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet

Reference

310.55.42.50.13.001

Movement

3861

Movement Features

Small Seconds, Hours, Minutes
Chronograph
Chronometer

Case

Sedna Gold 42mm

Dial Color

Brown

Omega - 3513.50 · $2,400

The Omega Speedmaster 3513.50 is a sleek and prestigious watch with a black dial, available for real collectors looking for a classic timepiece.

Condition: good/fair condition, serviced in 2024
Amplitude: within standard
Rate per day: +3/-12
Service papers included: yes

Posted at

Jul 31, 2025, 4:05 PM

Active

View listing on r/WatchExchange

Omega Triple Date Speedmaster - Automatic - Silver Dial - 3523.30.00

Omega - 3523.30.00 · $2,100

The Omega Triple Date Automatic features a 39mm stainless steel case, silver dial, and classic triple calendar chronograph layout.

Condition: Very good overall
Case size: 39mm diameter
Movement: Omega Caliber 1151

Posted at

Jul 31, 2025, 2:46 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Professional -Neo-Vintage Clean Example.

Omega - 3590.50 · $4,500

This is the Omega Speedmaster Professional Moonwatch, an iconic watch that stayed true to the one worn on the moon. It features a Hesalite crystal and solid caseback.

Condition: excellent and unpolished with light signs of wear
Crystal type: Hesalite
Bracelet included: true
Other bracelet available: true

Posted at

Jul 31, 2025, 12:31 PM

Active

View listing on r/WatchExchange