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
Escapement

Escapement

The escapement mechanism is a commonly used mechanism in mechanical watches that controls the release of energy from the mainspring and regulates the movement of the watch hands. The escapement mechanism is a type of mechanical mechanism that transfers pulses to the balance wheel in the watch, helping it oscillate back and forth. With each oscillation of the balance wheel, the gear system in the watch is able to advance a fixed amount, causing the watch hands to move at a constant rate. The escapement mechanism also produces the repeated ticking sound in mechanical watches.