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
Luminescence

Luminescence

Is the property of emitting light without relying on external sources of illumination.

Luminescent materials are used to enhance the visibility of watch dials, watch hands, hour markers, and bezels in low-light or dark conditions. These materials contain phosphorescent or fluorescent substances that can absorb light energy and slowly release it as visible light. They are commonly known as luminescent or luminous materials and are often applied to watch components.