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
Gear train

Gear train

Is a set of interconnected gears that transmit power from the mainspring of the watch to various components such as the hands, mechanisms and other watch functions .

The gear train functions to regulate the movement of the watch and ensure time accuracy. It consists of multiple gears of different sizes that mesh together, allowing the transfer of rotational energy and controlling the speed and torque within the watch mechanism. The gear train is an essential component of mechanical watches and plays a crucial role in the overall functioning of the watch.