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
Dial

Dial

The dial is a flat disc that serves as the face of the watch, displaying the time, marks, numbers, and indicators that show the time, date, and other functions and information on the watch.

The dial is mounted in the watch case and is the main visual element that allows the user to read the time. It usually consists of a circular disc with the necessary time units such as hours, minutes, and seconds. Numbers, marks, hands, or windows are placed on the dial to indicate the appropriate time. The display can be marked with numbered indexes, represented by hands, or through digital windows.

In addition to providing time reading, the dial may have other elements such as a power reserve indicator, date display, moon phase indicator, or sub-dials for various functions. The dial is designed with diverse colors and patterns to add aesthetics and distinction to the watch.