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.

Dubois-Depraz

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Dubois-Depraz

Dubois-Depraz is a component manufacturer located in the Vallee de Joux in Switzerland, specializing in the production of modules that enhance the functionality of watch movements, particularly in chronographs and calendar mechanisms. They play a significant role in the Swiss watchmaking industry as a supplier to renowned watch brands such as Audemars Piguet, Richard Mille, and Rolex.

At their factory, Dubois-Depraz meticulously tests and assembles watch movement modules, a process that requires precision and can take several months to complete. These modules are designed to be added to the base movements to provide additional features and complications to the watches. By collaborating with famous watch brands, Dubois-Depraz contributes to the production of high-quality watches that incorporate advanced chronograph and calendar mechanisms.

Despite the complexity involved in creating watch movement modules, the company has developed efficient practices that allow them to produce over 100,000 modules annually. This demonstrates their ability to meet the industry's requirements and deliver high-quality components to their customers.