Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet

Reference 310.55.42.50.51.001

Omega Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet

About this watch

The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold is a stunning blend of luxury and functionality, with its Sedna gold construction and intricate chronograph features. The watch's sheer elegance is undeniable, with a black sunburst finish contrasting beautifully with gem-set indexes and ruby accents. Certified as a Master Chronometer by METAS, the Omega caliber 3861 movement is an engineering marvel, resistant to magnetic fields up to 15,000 gauss. With small seconds, hours, and minutes hands, the chronograph functionality offers precision timing. The watch's durability is also noteworthy, with sapphire glass adding scratch resistance. The Sedna gold bracelet ensures a secure fit, while its adjustability makes it comfortable for wearers of all wrist sizes. This timepiece is not just a luxury item but a conversation starter, status symbol, and piece of horological history.

Buy Now on Jomashop

This is an affiliate link

Key Features

Omega caliber 3861 movement with Co-Axial escapement and silicon balance spring
Sedna gold construction with gem-set indexes and ruby accents
50m water resistance with sapphire glass scratch resistance
Chronograph functionality with small seconds, hours, and minutes hands
Adjustable Sedna gold bracelet for secure fit on all wrist sizes

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet

Reference

310.55.42.50.51.001

Movement

3861

Movement Features

Small Seconds, Hours, Minutes
Chronograph
Chronometer

Case

Sedna Gold 42mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

Current Listings

2025 OMEGA Speedmaster Moonwatch Professional White on Black Rubber Deployant 310.32.42.50.04.001 Full Set

Omega - 310.32.42.50.04.001 · $7,399

A 2025 Omega Speedmaster Moonwatch Professional with a white lacquered dial, presented on a black rubber strap with a deployant buckle.

Condition: Pristine pre-owned condition, minor wear on case back and clasp
Case size: 42mm
Case thickness: 13.2mm
Movement: Manual-Winding Co-Axial Master Chronometer Calibre 3861 (METAS certified)

Posted at

May 13, 2026, 2:35 PM

Active

View listing on r/WatchExchange

Omega Speedmaster - 311.92.44.51.01.007 (Dark Side of the Moon)

Omega - 311.92.44.51.01.007

The Dark Side of the Moon is a limited edition Omega Speedmaster reference 311.92.44.51.01.007.

Model name: Dark Side of the Moon

Posted at

May 13, 2026, 2:02 PM

Active

View listing on r/WatchExchange

OMEGA Speedmaster Moonwatch 3861 Sapphire Sandwich - Very Good Condition - Watch Only on Hirsch Robby Sailcloth - ONLY $4999 SHIPPED CONUS

OMEGA - Speedmaster Moonwatch 3861 Sapphire Sandwich · $4,999

This OMEGA Speedmaster Moonwatch is for sale, a well-cared-for timepiece that runs perfectly and comes with a worn Hirsch Robby sailcloth strap. The watch has been well-maintained and shows minimal signs of wear.

Condition: Very Good Condition
Strap Material: sailcloth
Case Back: sapphire

Posted at

May 13, 2026, 10:13 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Date (3513.30)

Omega - 3513.30 · $2,425

This Omega Speedmaster date features a silver dial on a steel bracelet, produced from 1998-2010. It comes with the hangtag and an open warranty card.

Condition: excellent condition for its age
Case Size: 39mm diameter
Case Material: stainless steel
Bracelet Material: stainless steel

Posted at

May 13, 2026, 8:25 AM

Active

View listing on r/WatchExchange

Omega Speedmaster 3523.80 39mm - $1,750

Omega - 3523.80 · $1,750

Up for sale is my Omega Speedmaster 3523.80 39mm, an automatic caliber Omega 1151 movement in a steel case on original Omega steel bracelet.

Condition: Great condition with minimal hairlines/marks on case, caseback, and bracelet
Caliber: Omega 1151 movement
Case size: 39mm diameter
Bracelet length adjustment: up to 7-7.25 inch wrists

Posted at

May 13, 2026, 4:06 AM

Active

View listing on r/WatchExchange

Omega. Speedmaster. Reverse Panda. Box and Papers. $1999 Massive Reduction!!

Omega - Speedmaster. Reverse Panda · $1,999

This Omega Speedmaster Reverse Panda is a high-end watch featuring a unique reverse panda dial. It comes complete with its original box, papers, and warranty.

Condition: 7.75/10, has wear around bezel and some flea bites on crystal
Bracelet length: ~20 links to fit 7inch wrist
Condition rating: 7.75/10

Posted at

May 12, 2026, 9:13 PM

Active

View listing on r/WatchExchange