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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Complication

Complication

The term "complication" in watches refers to any additional feature or function that goes beyond the basic timekeeping function. Complications are additional mechanisms or display windows in a watch that provide information or perform functions beyond simply displaying hours, minutes, and seconds.

Complications can range from simple ones such as displaying the date or day, to more complex ones such as chronographs (stopwatch), moon phase indicators, perpetual calendars, tourbillons, and alarms, And other complications.

Complications often include additional sub-dials, windows, or hands on the watch dial to display the specific information or execute the desired function. They enhance the functionality and versatility of the watch, providing practical or aesthetic value to the wearer. Complications can vary in complexity and can be mechanical or automatic depending on the type of movement used in the watch.