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

Home
Glossary
Unidirectional rotating bezel

Unidirectional rotating bezel

Is an essential feature found in dive watches, serving as an external ring that can only be turned in one direction, typically counter-clockwise.

Its primary purpose is to prevent accidental rotation in the wrong direction, thus ensuring the safety and accuracy of time measurements during diving or other activities. The bezel is specifically designed to track elapsed time or measure specific intervals, with markings or numerals indicating minutes or other units of time. This functionality allows divers to easily monitor their remaining dive time and prevent potential risks associated with prolonged underwater stays.