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
Autonomy

Autonomy

refers to the ability of a watch to operate independently for a certain period of time without the need for external power sources. It is a measure of the watch's self-sufficiency and indicates the duration it can function without manual winding or battery replacement.

Autonomy is typically represented through the power reserve of the watch, which indicates the duration it can operate. A watch with high autonomy provides the wearer with the convenience of an extended time display, reducing the need for frequent battery changes or daily manual winding.