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
world time

world time

The world time complication is a feature that displays the time in different time zones, usually through a subsidiary dial surrounding the main dial. These time zones typically cover 24 cities, often chosen for their political or economic significance prior to the introduction of world time.

Complicated world time watches typically have an inner rotating or fixed bezel that bears the names of different cities or time zones. The inner bezel can be adjusted to align with the desired time zone, thus displaying the corresponding time in that area.