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
Amplitude

Amplitude

Is the extent of oscillation or rotation of the balance wheel in a watch movement. It represents the maximum angle reached by the balance wheel as it swings back and forth. Amplitude is an important factor in the accuracy and performance of a watch, as it affects the transfer of energy and the stability of the movement. A sufficient and consistent amplitude is crucial for maintaining reliable timekeeping and ensuring optimal functioning of the watch.