#Roger Dubuis #Excalibur #Perpetual Calendar

Roger Dubuis Unveils the Excalibur Bi-Retrograde Perpetual Calendar

Roger Dubuis, a name synonymous with innovation in luxury watchmaking, has once again set a new benchmark with the release of the Excalibur Bi-Retrograde Perpetual Calendar. This spectacular timepiece not only illustrates the identity of the esteemed Maison but also pays tribute to its founder’s fascination with complex mechanisms. The watch blends the science of astronomy with the art of Swiss horology, allowing for a captivating interaction of time and the celestial rhythms that govern it.

A Journey Through Time

At its core, the Excalibur Bi-Retrograde Perpetual Calendar represents an evolution in perpetual calendar movements with the newly developed RD850 caliber. This piece is not just about telling time; it is about tracking the intricate movements of celestial bodies, embodying an aesthetic that is an essential hallmark of the Maison. The design meets both elegance and functionality, accurately measuring the flow of time while simultaneously reflecting the lunar phases in exquisite detail.

The Complexity of the Perpetual Calendar

Creating a perpetual calendar is regarded as one of the most challenging endeavors in horological design. Roger Dubuis' commitment to push the boundaries of watchmaking is evident in his approach to this complex mechanism. For the Maison, the perpetual calendar is not merely a display of time and date — it symbolizes relentless dedication and technical excellence. With a seamless operation, the calendar considers month lengths and leap years, presenting time in a format that is as enlightening as it is practical.

The hallmark bi-retrograde display, which has been a part of the Maison’s identity since its patented concept in 1989, adds a dynamic element to the watch. The display smoothly transitions across an oval scale, returning to its starting point with each completed cycle.

Innovations in Movement

The RD850 caliber embodies Roger Dubuis' spirit of innovation with its 435 components and 60-hour power reserve, all produced in-house in Geneva. The new movement boasts significant improvements, notably the inclusion of a moon phase collector. This feature allows users to set the moon display easily, enhancing the usability of the timepiece while preventing undue strain on the mechanism.

Astronomical Moon Phase Display

One of the most enchanting aspects of the RD850 is the astronomical moon phase indicator located at 6 o’clock. This feature meticulously tracks the lunar cycles, designed around the periods from new moon to new moon, which takes approximately 29 days, 12 hours, and 45 minutes. Compared to typical moon phase mechanisms that require correction every few years, Roger Dubuis’ version remains remarkably accurate, needing adjustment only once every 122 years.

Superior Quality and Craftsmanship

The RD850 caliber is certified by the prestigious Geneva Seal, ensuring that it meets the highest standards of quality in the watchmaking world. This certification to the highest caliber guarantees not just the quality of the movement but also the excellence in finishing and performance that Roger Dubuis proudly associates with their creations. The movement features 19 different finishes, showcasing the Maison's dedication to artistry and technical skill.

Prominently featured is the specialty of inner angle finishing, a technique that demonstrates the fine craftsmanship typical of haute horlogerie. This advanced skill requires artisans to skillfully manipulate materials, resulting in exquisite polished finishes that catch the eye in remarkable ways.

A Cosmic Aesthetic

The open-worked dial of the Excalibur Bi-Retrograde showcases nine distinctive layers and is painted in a captivating new hue dubbed