Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink

Reference 310.20.42.50.99.001

Omega Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink

About this watch

The Omega Speedmaster Professional Moonwatch 310.20.42.50.99.001 is a stunning blend of tradition and innovation, featuring a unique Sedna Gold and pink finish. Its 42mm stainless steel case and Sedna Gold accents command attention, while the remarkable Omega caliber 3861 movement boasts a co-axial escapement, reducing friction for enhanced accuracy and longevity. Certified by METAS as a Master Chronometer, this watch can resist magnetic fields reaching an impressive 15,000 gauss. The sunburst pink finish adds sophistication, making it perfect for both casual and formal settings.

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Key Features

Omega caliber 3861 movement
42mm stainless steel case
Sedna Gold accents
Co-axial escapement
Master Chronometer certified by METAS
50m water resistance
Chronograph function

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink

Reference

310.20.42.50.99.001

Movement

3861

Movement Features

Small Seconds, Hours, Minutes
Chronograph
Chronometer

Case

42mm

Dial Color

Pink

Crystal

Sapphire

Water Resistance

Current Listings

Omega Speedmaster Cal 321 "Ed White" - 311.30.40.30.01.001

Omega - 311.30.40.30.01.001 · $17,000

This Omega Speedmaster Cal 321 is a rare and highly sought-after watch, with each movement being double assembled by a single watchmaker in Bienne.

Condition: Gently worn with minimal signs of wear
Movement caliber: 321
Annual production: <1000

Posted at

Apr 30, 2026, 5:36 PM

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2024 Omega Speedmaster Professional Moonwatch White Dial 310.30.42.50.04.001 Full Set

Omega - 310.30.42.50.04.001 · $6,600

The Omega Speedmaster Professional Moonwatch is a 2024 model with a white dial, featuring a stainless steel case and manual winding movement.

Condition: Light scratches on the case and bracelet
Case size: 42mm diameter
Movement type: Manual Wind

Posted at

Apr 30, 2026, 5:14 PM

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Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Brand New

Omega - 310.30.42.50.04.001 · $7,900

This is a Omega Speedmaster Moonwatch Professional with a white dial.

Condition: Brand New
Year of production: 2026

Posted at

Apr 30, 2026, 3:37 PM

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2021 Omega Speedmaster Racing 329.32.44.51.01.001 Orange Full Set - $6,495

Omega - 329.32.44.51.01.001 · $6,495

2021 Omega Speedmaster Racing, a racing themed version of the iconic Speedmaster watch, featuring an orange color scheme and various accessories.

Condition: Excellent condition with minimal signs of wear
Year: 2021
Case Size: 44mm
Contents: Watch,Inner & Outer Box,Card Holder,International Warranty Card,Pictograms Card,Master Chronometer Card,Instructions Manual

Posted at

Apr 30, 2026, 9:53 AM

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2025 Omega Speedmaster Sedna Gold 310.60.42.50.01.001 — Like New Condition, Box & Papers

Omega - 310.60.42.50.01.001 · $29,500

The Omega Speedmaster Sedna Gold elevates the iconic Moonwatch design with Omega’s proprietary Sedna gold and features a rich black dial.

Condition: Like new condition, ding on bezel near 12 o'clock
Box And Papers: Yes, complete with original box and papers (wallet not included)
Movement: Master Chronometer manual-wind
Size: [object Object]

Posted at

Apr 30, 2026, 9:10 AM

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[US] Omega Speedmaster Moonphase - Black Dial - 44mm - 304.30.44.52.01.001

Omega - 304.30.44.52.01.001 · $6,750

A pre-owned Omega Speedmaster Moonphase watch in excellent condition, featuring a black dial and 44mm case size.

Condition: Fantastic condition
Case size: 44mm
Bracelet condition: minor hairlines

Posted at

Apr 30, 2026, 8:28 AM

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Omega Speedmaster Moonwatch 310.32.42.50.01.001 Full Set + Exhibition Caseback

Omega - 310.32.42.50.01.001 · $5,170

This Omega Speedmaster Moonwatch Professional features the Co-Axial Master Chronometer Caliber 3861 and comes as a full set, including an aftermarket exhibition caseback.

Condition: Excellent overall condition with minor mark on Hesalite crystal
Crystal material: Hesalite
Caseback type: Exhibition (aftermarket) and solid (original)
Extras: Original purchase receipt from Omega

Posted at

Apr 29, 2026, 10:27 PM

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Omega Speedmaster Moonwatch – White Dial (Ref. 310.30.42.50.04.001)

Omega - 310.30.42.50.04.001 · $7,150

This Omega Speedmaster Moonwatch features a white dial and a 42mm stainless steel case.

Condition: worn a number of times with light signs
Case Size: 42mm diameter
Water Resistance: 50m water resistance
Movement Type: Manual wind Caliber 3861

Posted at

Apr 29, 2026, 9:32 PM

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[WTS] OMEGA Speedmaster Professional 3861 Sapphire Sandwich + Spiralwinder Ceramic Bezel Installed (original bezel included) - $5750 shipped CONUS

OMEGA Speedmaster Professional 3861 Sapphire Sandwich + Spiralwinder Ceramic Bezel Installed (original bezel included) - $5750 shipped CONUS

OMEGA - Speedmaster Professional 3861 Sapphire Sandwich · $5,750

This OMEGA Speedmaster Professional is a Sapphire Sandwich model, running at +0 seconds/day and with perfectly functioning chrono functions. It comes with an upgraded Spiralwinder ceramic bezel and a Forstner Bullet Bracelet with quick adjust clasp.

Condition: Very good condition
Bracelet: Forstner Bullet Bracelet
Bezel included: original OEM Omega bezel
Movement tech: latest movement technology

Posted at

Apr 29, 2026, 9:29 PM

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