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
Bell

Bell

Is a small mechanical or electronic component that produces an audible sound. It is typically cylindrical or dome-shaped and may have a solid center or hollow openings for sound emission. Bells are commonly used for signaling specific events or indicating the passage of time. When activated, the bell emits a clear and distinctive sound that can be heard by the wearer or those in close proximity. The design and construction of a bell may vary depending on the specific watch and its functions. It is an important feature in watches that incorporate alarm complications.

The difference between gongs and bells:

Gongs produce a series of tones that differ in pitch and duration, while bell provide only a single tone.