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
Bezel

Bezel

The bezel, is the rotating ring located on the outer part of the watch's dial. It can serve as a decorative element in some watches, but its classic function is to mark time intervals using a scale similar to a timer. The rotating or ring-shaped bezel on the watch's dial can be used to quickly and easily track elapsed time.

For example, in sports watches or diving watches, the bezel may have markers or numbers that are used to measure elapsed time for activities such as diving or distance covered. The bezel is rotated to set the starting point and the endpoint for the measured time.

The bezel can be fixed in some watches, where it does not move and primarily serves as a decorative element. In other watches, the bezel can be rotatable in one direction or bidirectional, depending on the design and intended use of the watch.