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.

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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

Crystal

Sapphire

Water Resistance

Current Listings

Omega SPEEDMASTER PROFESSIONAL MOONWATCH 3861 WHITE DIAL 2025 WARRANTY FULL SET

Omega - 310.30.42.50.04.001 · $7,425.007

This is a new 2025 model Omega Speedmaster Professional Moonwatch with a 42mm stainless steel case and white dial, featuring a manual-winding chronograph movement with co-axial escapement.

Condition: Excellent Condition
Movement: 3861 Manual-Winding Chronograph
Case material: Stainless Steel
Diameter: 42mm

Posted at

Jun 11, 2025, 9:07 PM

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Omega Speedmaster Automatic MK40 Day Date Ref 3520.53

Omega - 3520.53 · $2,650

One of the coolest Speedmaster variants, featured in A Man and His Watch, with a tritium dial and luminova hands.

Condition: Pre-owned, with wear and dings on the bezel, insert, and case
Case size: 39mm diameter

Posted at

Jun 11, 2025, 8:36 PM

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Omega Speedmaster Professional Tokyo 2020 522.30.42.30.03.001

Omega - 522.30.42.30.03.001 · $4,900.005

This Omega Speedmaster Professional Tokyo 2020 is a high-end watch that comes with its original boxes and books, but no warranty card. It's in excellent condition.

Condition: Excellent condition
Box And Papers: includes
Warranty Card: no

Posted at

Jun 11, 2025, 7:30 PM

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Omega Speedmaster Professional Sapphire 3861

Omega - 3861 · $5,100

A Omega Speedmaster Professional Sapphire Sandwich sold on an OEM rubber strap, also including an unworn leather strap and full kit of original accessories.

Condition: Excellent preowned
Strap included: 2
Case condition: preowned

Posted at

Jun 11, 2025, 4:16 PM

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Omega Speedmaster - First Omega in Space - FOIS - 310.30.40.50.06.001 ( new )

Omega - 310.30.40.50.06.001 · $8,250.008

This Omega Speedmaster 3861 Anniversary Series is a brand new First Omega in Space (FOIS) model, reference # 310.30.40.50.06.001, featuring a stainless steel case and Omega 3861 calibre.

Condition: Brand New / Complete Set
Case Size: 39.7mm
Material: Stainless Steel
Calibre: Omega 3861

Posted at

Jun 11, 2025, 3:43 PM

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