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

Omega Speedmaster Moonwatch Professional Co-Axial Master Chronometer Chronograph 42mm 310.30.42.50.04.001

Omega - 310.30.42.50.04.001 · $8,600.009

This Omega Speedmaster Moonwatch Professional is a modern version of the classic chronograph, featuring a 42mm steel case and a sapphire crystal.

Condition: Like New/Unworn
Case material: Steel
Bracelet material: Steel
Crystal material: Sapphire

Posted at

Jun 16, 2025, 3:21 PM

Active

View listing on WatchUseek

Omega Speedmaster X-33 Full Service 6/25

Omega - X-33 · $2,400

This Omega Speedmaster X-33 is a recent service with a complete overhaul, making it ready to wear and backed by a 2-year warranty from Omega.

Condition: pristine condition
Service Date: 6/25
Warranty Expires: 6/4/2025

Posted at

Jun 16, 2025, 11:26 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Tuetonic - Black dial (in UK)

Omega - 145.0040 · £1,300.001

This Omega Speedmaster Teutonic features a black dial, manual wind movement, and an integrated bracelet. The watch has a case width of 45mm and a thickness of 12.5mm.

Condition: Good condition for age, with some scratches and minor wear
Case Width: 45mm
Bezel Diameter: 39mm
Lug To Lug Width: 46mm

Posted at

Jun 16, 2025, 10:28 AM

Active

View listing on WatchUseek

Omega Speedmaster Moonwatch Professional 311.30.42.30.01.006 - Box & Papers

Omega - 311.30.42.30.01.006 · $5,369

The Omega Speedmaster blends iconic style with top-tier performance. Its 42mm stainless steel case and black tachymeter bezel create a bold, timeless look.

Condition: great overall condition with minor wear only seen upon close inspection
Box Papers: true
Movement: 1863 manual-winding movement
Case Back Engraving: The First Watch Worn on The Moon

Posted at

Jun 16, 2025, 9:43 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Apollo 17 45th Anniversary (2-yr warranty) Ref: 311.30.42.30.03.001

Omega - 311.30.42.30.03.001 · $8,200

A rare and exquisite Omega Speedmaster Apollo XVII, a limited edition timepiece that commemorates the 45th anniversary of the final moon landing in 1972. The watch features a polished blue ceramic case, bezel, and dial, as well as 18K yellow gold indexes and hour-minute hands coated in Super-LumiNova.

Condition: Very good condition with slight imperfections on the dial
Case size: 42mm diameter
Water resistance: 50m / 167ft depth rating
Movement: OMEGA Calibre 1861, Manual-Winding Chronograph Movement

Posted at

Jun 16, 2025, 9:11 AM

Active

View listing on r/WatchExchange

Omega Speedmaster 145.022-74 ST Moonwatch

Omega - 145.022-74 ST Moonwatch · $4,150

A vintage, pristine Omega Speedmaster Professional with a Calibre 861 movement, featuring a moonphase complication and a 1171 bracelet.

Condition: Vintage Pristine
Movement: Calibre 861
Bracelet: Omega 1171
Crystal: Original

Posted at

Jun 16, 2025, 12:23 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Professional 3861 Hesalite Full set

Omega - 3861 · $5,050.005

This Omega Speedmaster Professional is in excellent condition, with a 42mm diameter and Hesalite crystal. It's dated May 2023 and has a screw-in steel caseback.

Condition: Very good
Case size: 42mm diameter
Crystal type: Hesalite
Water resistance: 50 meters

Posted at

Jun 15, 2025, 10:12 PM

Active

View listing on WatchUseek