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
Atmos clock

Atmos clock

Is a unique timepiece that operates based on slight changes in temperature and atmospheric pressure. It utilizes a sealed capsule filled with a mixture of gases that expand and contract with temperature variations. These fluctuations in temperature and pressure cause the capsule to expand and contract, which in turn winds the mainspring of the clock. This innovative mechanism allows the clock to operate indefinitely without the need for manual winding or external power source. The Atmos clock is known for its precision and self-sustaining nature, making it a remarkable piece of horological engineering.