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.

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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

OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥

OMEGA - 311.92.44.30.01.001 · $10,000

The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 commemorates the 50th anniversary of the Apollo 8 mission, featuring a black ceramic case with a skeletonized and laser-ablated dial. The watch is powered by the Calibre 1869 movement and comes in an ultimate set with various accessories.

Condition: UNWORN
Case material: black ceramic
Diameter: 44.25mm
Movement: Calibre 1869 with blackened bridges and mainplate

Posted at

Jan 16, 2026, 8:45 PM

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Omega Reverse Panda Speedmaster Full Set $11,900 including CONUS shipping 310.30.42.50.01.004

Omega - Speedmaster 310.30.42.50.01.004 · $11,900

For sale is the new Speedmaster reverse panda, comes with full links and all accessories.

Condition: Unworn, essentially new condition
Case Size: 42mm diameter
Shipping Included: continental US

Posted at

Jan 16, 2026, 8:06 PM

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Omega Speedmaster Professional Moonwatch Sapphire Sandwich – Full Set – Sept 2025 Warranty – Bracelet + Leather

Omega - Sapphire Sandwich · $6,700

This Omega Speedmaster Professional Moonwatch features a 42mm stainless steel case with sapphire crystal front and display caseback, powered by a manual-wind movement.

Condition: Very good condition
Case size: 42mm diameter
Crystal material: Sapphire front & display caseback
Movement type: Manual-wind Co-Axial Master Chronometer

Posted at

Jan 16, 2026, 6:31 PM

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OMEGA Speedmaster Calibre 321 "Ed White" Ref. 311.30.40.30.01.001 - ULTIMATE SET! 🔥$18,000🔥

OMEGA - 311.30.40.30.01.001 · $18,000

The OMEGA Speedmaster Calibre 321 Ref. 311.30.40.30.01.001 is a faithful recreation of the reference 105.003, famously worn by astronaut Ed White during America's first spacewalk.

Condition: UNWORN
Movement: Calibre 321
Case material: stainless steel
Diameter: 39.7mm

Posted at

Jan 16, 2026, 6:20 PM

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Omega. Speedmaster Moonwatch. "1971 Apollo XV". $5350 Only

Omega - 311.30.42.30.01.003 · $5,350

This Omega Speedmaster Moonwatch, celebrating the Apollo 15 mission, features a black dial with blue and red accents and comes with an OEM bracelet.

Condition: Good condition (7.5/10)
Case size: 42mm
Bracelet length range: 7.5inch hand
Dial color: Black with Blue and Red Accents

Posted at

Jan 16, 2026, 1:21 PM

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2024 Omega Speedmaster "Ed White" 39.7mm 311.30.40.30.01.001 Black Dial - $16,250

Omega - 311.30.40.30.01.001 · $16,250

2024 Omega Speedmaster "Ed White" in 39.7mm case size with a black dial.

Case diameter: 39.7mm

Posted at

Jan 16, 2026, 10:23 AM

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2024 Omega Speedmaster "Ed White" 39.7mm 311.30.40.30.01.001 Black Dial - $16,250

Omega - 311.30.40.30.01.001 · $16,250

2024 Omega Speedmaster 'Ed White' in a 39.7mm case with a black dial.

Case size: 39.7mm diameter
Dial color: black

Posted at

Jan 16, 2026, 10:20 AM

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Omega Speedmaster Calibre 321 Ed White 311.30.40.30.01.001 $13,999

Omega - 311.30.40.30.01.001 · $13,999

This Omega Speedmaster Calibre 321 pays tribute to the original speedmaster worn during America's first spacewalk in 1965, with a 39.7mm stainless steel case powered by the legendary hand-wound Calibre 321.

Condition: Preowned - Excellent
Box Papers: Yes, dated July 2023
Case Size: 39.7mm diameter
Movement Type: hand-wound

Posted at

Jan 16, 2026, 9:50 AM

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