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
crown

crown

The crown is a small button or knob, typically cylindrical in shape, located on the side of the watch case. It is used to perform various functions related to operating and adjusting the watch.

The primary purpose of the crown is to set the time on the watch. By pulling the crown out, it disengages from the movement, allowing the wearer to rotate it to adjust the hands and set the correct time. Once the desired time is set, the crown is pushed back in to re-engage with the movement, securing the time adjustment.

In addition to time setting, the crown may have other functions depending on the features of the watch. It can be used for manual winding in mechanical watches by turning it manually, providing power to the mainspring. Some crowns may have multiple positions, allowing for adjustment of other functions such as date, day.

The crown is often designed with a secure surface or adorned with the brand logo or decorative element, making it easy to use.