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
bearing

bearing

Is the component that supports the rotating parts and reduces friction within the watch movement. Bearings are usually made from high-carbon or stainless steel due to its durability and strength.

They are used in the watch movement to provide smooth and precise rotation for the gears, wheels, and other moving parts. The bearings are strategically placed at specific points within the watch movement to ensure stability, minimize wear, and ensure accurate timekeeping.