OMEGA Speedmaster Moonwatch 321 Platinum Chronograph

October 6, 2025
1 min read
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Omega Speedmaster Moonwatch 321 Platinum watch front

Omega Speedmaster Moonwatch 321 Platinum Overview

OMEGA’s Speedmaster Moonwatch 321 Platinum is crafted with a platinum case featuring meteorite subdials and is powered by a faithful 1:1 recreation of the iconic Caliber 321 movement. This model pays tribute to the brand’s deep-rooted connection with space exploration and the legacy of the original Moonwatch.

Speedmaster Moonwatch 321 Platinum black onyx dial

The 42mm case is made from OMEGA’s exclusive “Pt 950 Au 20” platinum alloy, a blend of platinum and gold that produces a brighter, more refined finish compared to standard platinum. The case is fitted with a box-shaped sapphire crystal that enhances the visual depth of the dial. A black ceramic bezel surrounds the crystal, featuring a white enamel-filled tachymeter scale with classic details like “Dot over 90” and “Diagonal to 70,” echoing historic Speedmaster references.

Speedmaster Moonwatch 321 Platinum meteorite subdials

The black onyx dial features platinum markers and hands, including the signature 3-6-9 chronograph layout:
3 o’clock – 30-minute chronograph counter
6 o’clock – 12-hour chronograph counter
9 o’clock – small seconds

At 12 o’clock sits a vintage-style logo with the long “r” lettering, an aesthetic nod to Speedmaster models from the 1960s. Each subdial incorporates real lunar meteorite slices, giving every watch a unique texture and reinforcing the Moonwatch’s storied connection to lunar exploration.

Caliber 321 movement Omega Speedmaster Moonwatch Platinum

Powering the watch is the legendary Caliber 321 manual-winding movement, operating at 18,000 vph with a 55-hour power reserve. The movement’s column-wheel construction is significantly more complex to manufacture than standard chronograph calibers, and today, it is reserved only for the most elite Speedmaster models.

The watch is paired with a black alligator leather strap and is priced at 70,000 €.

Omega Speedmaster Moonwatch 321 Platinum case details
Omega Speedmaster Platinum lug design
Omega Speedmaster 321 Platinum leather strap
Moonwatch 321 Platinum wrist shot
Speedmaster Moonwatch 321 Platinum meteorite texture
Omega 321 Platinum movement finishing
Speedmaster Platinum caseback view

OMEGA Speedmaster Moonwatch 321 Platinum Chronograph

“Pt 950 Au 20” platinum alloy case, Case diameter: 42mm,
Case thickness: 13.4mm, Black ceramic bezel, Sapphire crystal,
Black onyx dial with platinum hands,
Caliber 321 manual-winding movement,
18,000 vph frequency, 55-hour power reserve,
Black alligator leather strap, Pin buckle, Water-resistant to 50 meters.
Complicated function: Chronograph

For more details about the OMEGA Caliber 321 heritage, visit the official OMEGA Caliber 321 page.

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Fidel is the founder and editor-in-chief of Luxury Wrist Club. With over a decade of experience in haute horlogerie and fine jewelry, he specializes in technical watchmaking, gemstone appraisal, and luxury market trends. His work has been featured in leading industry publications, and he is a regular speaker at international watch and jewelry summits.

Based in Europe, Fidel combines deep technical knowledge with a collector's eye for detail. He believes that true luxury is not just about possession — it's about understanding the craftsmanship, heritage, and artistry behind every masterpiece.

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