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.

Sinn

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Established in 1961 in Germany by Helmut Sinn, a former World War II pilot and flight instructor, Sinn initially operated under the name ‘Helmut Sinn Spezialuhren’. Leveraging his profound expertise in aviation, Sinn's inception saw the production of navigation clocks and pilot chronographs, emphasizing functionality, technology, and design.

Remaining faithful to its founder's ethos, Sinn persists in fulfilling the demands of professional applications, even in the most challenging circumstances. The brand has pioneered several technologies to ensure its luxury timepieces adhere to increasingly stringent performance criteria. These innovations include TEGIMENT for enhanced scratch resistance, Ar-Dehumidifying Technology to prevent fogging, DIAPAL for a lubricant-free anchor escapement, HYDRO for reflection-free underwater visibility, magnetic field protection, temperature resilience.