The Excalibur Bi-Retrograde Calendar by Roger Dubuis

This year, Roger Dubuis celebrates its 30th anniversary, and for the occasion, the company pays tribute to its co-founder’s favourite complication: the bi-retrograde display.

This function, previously featured in the Excalibur Grande Complication alongside a dozen other highly complex mechanisms, takes centre stage once again. The Maison has also introduced a less complicated, more classic edition to further honour the bi-retrograde display.

Also referred to as “the ecliptic counters” by the Maison a nod to their elliptical shape and distinctive role in indicating the months and date the design showcases a symmetrical dial layout. Enhanced by refined detailing, it pays homage to the Maison’s early creations from 1996.

Glossary

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Glossary
Microsecond

Microsecond

The microsecond is a unit of time measurement commonly used in precise timing mechanisms and movements. It represents a very small fraction of a second, equal to one millionth of a second (0.000001 seconds).

The accuracy of watch movements is often measured and calibrated in terms of microseconds to ensure precise timekeeping. This level of precision is crucial for chronograph functions, which require accurate measurement of elapsed time down to the microsecond. Watchmakers and manufacturers utilize advanced technology and techniques to achieve such precise timekeeping capabilities in high-end watches.