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While revealing the magnificence and splendour of the sky, may astronomy help mankind to rediscover the true sense of beauty.

Caliber UN-99

Caliber UN-99

Self-winding

Classic or unconventional, simple or complex, for men or women, our collection of calibers is one of the most extensive and diverse in the industry. It is based on a culture of innovation, independence and quality that has made Ulysse Nardin one of the most advanced brands in creative watchmaking.

A complex composition

  • Number of jewels: 33
  • Total diameter (mm): 31.8
  • Astrolabium Gallileo Galilei 999-70 watch features - 1
  • Astrolabium Gallileo Galilei 999-70 watch features - 2
  • Astrolabium Gallileo Galilei 999-70 watch features - 3
Experience unparalleled accuracy with the Astrolabium’s intricate epicyclical gear systems, achieving a remarkable error margin of one day after 144,000 years.