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
Manual Winding

Manual Winding

Manual winding is a manual mechanism used to power watches by manually winding the crown. This mechanism is found in traditional mechanical watches.

When the watch needs power to operate or be reset, the crown is manually rotated by the user, which in turn winds and tightens the mainspring. The energy generated from manual winding is stored in the mainspring, which then transfers this energy to the internal mechanism of the watch to power its functions.