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
mainspring

mainspring

It is a coiled metal wire that is tensioned manually or mechanically.

The mainspring, also known as the main power spring, is a crucial component in a watch movement. It stores the mechanical energy that powers the watch. When the mainspring is released, it gradually unwinds and releases the stored energy, transferring it to other parts of the watch. This allows the watch to operate and the hands to move with accuracy and stability.