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25 February 2025
Building on its heritage and past developments while looking to the future, Audemars Piguet has reimagined the perpetual calendar mechanism with ergonomics in mind.
Nicolas Ponsot from our R&D team tells us about the challenges of balancing performance, ergonomics, and aesthetics in designing our groundbreaking new perpetual calendar movement, Calibre 7138.
Our engineers dedicated 5 years to creating this horological feat, which offers new creative horizons, while blending technical complexity and simplicity of use.
Nicolas Ponsot
Project Lead Indus. Development, R&D, Audemars Piguet
To enhance the user experience and streamline the design of the case, AP engineers have created an easier and more intuitive correction system entirely controlled via the crown, making this high complication adjustable anywhere - without tools or risk of damage.
A new ergonomic perpetual calendar
Audemars Piguet has rethought the perpetual calendar, which mechanically reproduces the movement of the celestial bodies, with ergonomics at its heart to adapt to evolving lifestyles and open up new technical and design avenues.
Discover moreOur 150th Anniversary Website
How much do you know about Astronomy ? Discover our Astronomical Observatory and unveil the secrets of time.
Visit The House of WondersAstronomy, the mother of watchmaking
Drawing their inspiration from the clear night skies of the Vallée de Joux, generations of Audemars Piguet watchmakers have crafted prestigious timepieces capturing the astronomical cycles of days, months, years and the phases of the moon.
ReadUnveiling the secrets of astronomy
The first complication adopted by the Royal Oak was the calendar. Between 1983 and 1984, the famous octagonal watch was successively enriched with Day-Date, moon phase and perpetual calendar functions.
Read on AP Chronicles