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
Escapement wheel

Escapement wheel

This is a mechanism used in watch movements to convert continuous motion into precise and regular movement. It consists of several main components, including the escape wheel, the pallet fork, and the lever. These components are responsible for transferring energy from the mainspring and ensuring a stable and regulated movement of the balance wheel. This mechanism provides accuracy and stability in time display on the watch.