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
Annual Calendar

Annual Calendar

A complication that, at the very least, showcases the date, day, and month.

The annual calendar complication keeps track of the date, day of the week, and month, while automatically adjusting for the varying number of days in each month, except for February. This means that the watch only needs manual adjustment once a year at the end of February, to account for the difference between 28 or 29 days (in case of a leap year).