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Ulysse Nardin Classico 675-00: The Quintessential Marine Chronometer

Watch Guides

2025-06-03

The Dialogue Between Silicon Hairspring and Enamel: Ulysse Nardin Classico 675-00

Did You Know? The Nautical Revolution of Silicon Hairspring

The silicon hairspring technology in this timepiece originates from a major breakthrough in marine chronometry. While traditional hairsprings could accumulate up to 47 seconds of daily error due to temperature variations, the silicon hairspring in the 675-00 maintains an astonishing accuracy of ±1 second per day.


Artisanal Essence: The Fusion of Ancient and Modern Watchmaking

Silicon Hairspring Craftsmanship:

  • Utilizes aerospace-grade ion etching technology
  • Weighs merely 0.0002 grams
  • Withstands impacts up to 300G

Grand Feu Enamel:

  • Sourced from special mineral clay in Lyon, France
  • Undergoes 7 firings at 800°C
  • Each dial is a unique work of art



Key Q&A


Q: Does the silicon hairspring degrade over time?

A: Laboratory tests indicate a theoretical lifespan exceeding 300 years. After 20 years of practical application, it remains stable, with a 10-year manufacturer's warranty.


Q: Is the enamel dial fragile?

A: While highly scratch-resistant, it remains brittle. Avoid severe impacts. If damaged, repairs must be done in Switzerland at a cost of approximately $5,000.


Eternal Value

The Classico 675-00 perfectly embodies the essence of haute horlogerie: preserving traditional craftsmanship with cutting-edge technology. In an era of rapidly obsolete smart devices, it maintains an eternal charm that defies the passage of time.


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