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
Luster

Luster

Luster, also known as shine or brilliance, refers to the way light interacts with the surface of a crystal, rock, or metal. The word "luster" is derived from the Latin word "lux," meaning "light," and is associated with radiance, gloss, and sparkle exhibited by watch materials such as the case, dial, and other components. The level of luster can vary depending on the materials used in the manufacture of watch components and contributes to the overall aesthetic appearance of the watch. Various finishing techniques, such as polishing and others, can enhance the luster and create a luxurious look for watch components.