Blancpain Grande Double Sonnerie
It’s not often that something genuinely unprecedented arrives in the world of high horology, but Blancpain’s new Grande Double Sonnerie is exactly that—a world-first accomplishment born from eight years of intense collaboration between the brand’s master watchmakers and engineers. The project was the brainchild of President & CEO Marc A. Hayek, who envisioned not simply creating another grande sonnerie, but redefining what a chiming wristwatch could be. His goal: give the watch not just one melody but two—including an original composition by legendary KISS drummer and longtime Blancpain friend Eric Singer. The idea seemed nearly impossible at the start, yet after eight full years of research and development, the result is a world’s first mechanical and musical triumph.
Blancpain Grande Double Sonnerie plays two melodies using four notes.
The watch’s central breakthrough is its ability to chime four distinct notes—E, G, F, and B—using four hammers, rather than the traditional two. Most minute repeaters rely on a high and low note; creating a full musical score requires doubling that architecture, along with inventing an entirely new mechanical language to regulate pitch, harmony, tempo, and volume with perfect consistency. Blancpain achieved this through a sophisticated system of gears, racks, teeth, and a patented silent magnetic regulator that governs the rhythm of the melody without adding mechanical noise. The result is an acoustical performance of astonishing clarity and musicality.
Mark A. Hayek, CEO of Blancpain with singer songwriter of Kiss legend, Eric Singer — who composed the “Blancpain” melodie for the watch.
Even more extraordinary, the wearer can choose between two different melodies via a pusher on the case: the classic Westminster chime and Singer’s modern composition titled “Blancpain.” The mechanism that enables this instantaneous switching is operated by a column-wheel clutch—familiar territory for enthusiasts—which ensures the pusher has a smooth, precise feel and can toggle reliably between the two sound profiles.
This is a grande sonnerie, petite sonnerie, and minute repeater all in one, but the innovation doesn’t stop with the chiming system. Blancpain stacked several of its most prestigious complications into this single timepiece, including a flying tourbillon and a fully integrated retrograde perpetual calendar. It is, in fact, the most complicated watch Blancpain has ever built, containing 1,053 components, 1,200 technical drawings, and 21 patents, 13 of which are incorporated directly into the movement.
The four hammers for the Blancpain Grande Double Sonnerie watch can be seen in the upper left side of the watch.
A Melodic Performance Like No Other
While most grande sonneries strike the hours and quarters in simple tone combinations, Blancpain pushes far beyond tradition. On the hour, the Grande Double Sonnerie plays not only the hours but all four quarters—giving the owner the rare pleasure of hearing the full melodic sequence. Achieving this required Blancpain’s technical teams to tune each gong to a concert-level standard using laser frequency measurement. The precision is so fine that even the spacing between notes—down to tenths of a second—is measured and adjusted through microscopic changes to the shapes of specific teeth in the sonnerie mechanism.
To enhance the acoustics further, Blancpain integrated an acoustic membrane into the bezel, one of the patented solutions that improves sound propagation and enriches resonance. The gongs themselves are crafted from gold, selected after extensive research confirmed it offered the most refined tonal quality.
The wearer of the Blancpain Grande Double Sonnerie can choose between the different acoustical choices — clicking the double-level mechanism into place.
A Symphony of Mechanics
Beyond the musical innovations, the watch houses two additional grand complications. The flying tourbillon—an emblematic Blancpain construction since 1989—has been updated with a silicon balance spring and boosted to a 4 Hz frequency for enhanced timekeeping performance. Its bridge-free architecture leaves the mechanism beautifully open, allowing light to play across the mirror-polished surfaces of the cage.
The retrograde perpetual calendar is a technical achievement in its own right. Instead of using a conventional modular plate that would obscure the sonnerie, Blancpain fully integrated the calendar into the movement, a far more difficult approach that preserves the open architecture. The brand’s under-lug correctors, now reengineered directly into the movement because of the acoustic membrane, allow fingertip adjustments without tools—another nod to everyday wearability.
The Blancpain Grande Double Sonnerie watch was eight years in the R&D stages.
Artistry in Every Detail
Despite its staggering complexity, the watch remains wearable at 47 mm in diameter and 14.5 mm thick. The movement is crafted in 18k gold, with 27 bridges showcasing hand-finishing of the highest order: 135 inward angles, mirror polishing, anglage, perlage, straight graining, and diamond milling, all executed by hand in the Le Brassus workshops. Five safety systems protect the mechanism from incorrect manipulation—a reminder that this masterpiece is designed to be worn, not locked away.
The presentation box, carved from wood sourced in the Vallée de Joux’s legendary Risoud forest, acts as a natural soundboard—amplifying the melodies in the same way fine tonewood enhances the voice of a violin.
With its dual melodies, world-first acoustical architecture, and symphony of complications, the Blancpain Grande Double Sonnerie stands as one of the most ambitious achievements in today’s watchmaking—an emotional, mechanical, and musical milestone.
