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
Split seconds chronograph

Split seconds chronograph

A complication that allows for the measurement and recording of two events simultaneously but with different durations. When the chronograph seconds parts are activated, both chronograph seconds hands start moving together. By utilizing an additional mechanism, typically controlled by a pusher (button), one of the hands can be stopped while the other continues its motion. This enables the measurement of a separate time interval while the main hand continues to track the overall elapsed time. Once the secondary timing is complete, the stopped hand can be synchronized with the main hand to resume tracking together.