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
oscillating pinion

oscillating pinion

A vital mechanical component found within a watch movement and is utilized in the intricate mechanism of a chronograph. Its function revolves around enabling the start, stop, and reset functions of the chronograph's seconds hand. The oscillating pinion acts as an intermediary between the crown or pusher and the chronograph mechanism, facilitating the transfer of rotational motion. When activated, it engages with a corresponding wheel, allowing the chronograph seconds hand to rotate and accurately measure elapsed time. Conversely, when the chronograph is stopped or reset, the oscillating pinion disengages from the wheel, halting the movement of the hand.