Blancpain Grande Double Sonnerie: A Breakthrough In Chiming Complications
Blancpain has unveiled a creation that pushes the very limits of mechanical acoustics and traditional horology: the Grande Double Sonnerie. Developed over the course of eight years, this exceptional timepiece stands as the most complex watch the manufacture has ever produced and showcases an entirely new level of mastery in the world of chiming mechanisms.
A New Approach to the Sonnerie Tradition
To appreciate the magnitude of this achievement, it is important to understand the mechanism at its foundation. A traditional grande sonnerie is one of the most demanding complications in watchmaking because it strikes the hours and quarters automatically as time passes, a system that must also incorporate safety features, energy management, and impeccable coordination between multiple mechanical sequences.
Blancpain advances this concept by introducing a double sonnerie, a variation that does not repeat the same melody twice but instead allows the wearer to choose between two different chimes. One is the classical Westminster melody, known for its recognizable four-note pattern. The other is a newly arranged musical sequence built from the same notes but composed specifically for this watch. Switching between the melodies is done through a single pusher built into the case, a seemingly simple gesture made possible only through highly complex internal mechanics.
A Concentration of Haute Complications
The Grande Double Sonnerie goes beyond its innovative chiming system by integrating several additional complications that are each incredibly challenging to produce on their own. The watch includes a petite sonnerie mode that strikes only the hours, a minute repeater that allows the wearer to activate the chime on demand, and a flying tourbillon positioned prominently on the dial to enhance chronometric performance. It also features a retrograde perpetual calendar that displays the day, date, month, and leap year cycle, using hands that sweep backward when they reset — a detail that adds further mechanical sophistication.
Bringing together these complications requires extraordinary coordination of gears, racks, hammers, levers, and safety mechanisms. The technical architecture must ensure that each function operates independently without interfering with the others, a challenge that underlines the exceptional degree of handcrafting behind the movement.
A Robust but Refined Case
The watch’s case has been designed to provide both space for the movement and optimal acoustic properties. Measuring 47 mm, it is substantial, yet wearable for collectors familiar with chiming watches. Blancpain offers the case in red gold or white gold, both materials selected for the quality and clarity with which they transmit sound. Despite its size, the watch maintains Blancpain’s characteristic balance and refinement, combining smooth surfaces with elegant proportions and traditional finishing.
Ultra-Low Production and Bespoke Craftsmanship
Because of the manual skill required to assemble and tune the movement, Blancpain will produce only two pieces per year. Although not labeled as a limited edition, such a low production volume ensures extreme rarity. Each watch is created as a bespoke piece, and clients have the freedom to personalize many aspects of the exterior. Options such as engraving, decorative guilloché, artistic motifs, or precious stones allow each Grande Double Sonnerie to become a unique expression of its owner’s taste. While the case material and movement configuration are fixed, the rest of the aesthetics can be adapted to the collector’s vision.
Price and Exclusivity
The Blancpain Grande Double Sonnerie is priced at CHF 1,700,000, a figure that reflects the complexity of its construction, the years of research and development behind it, and the extremely limited annual output. Given the rarity of watches in this category and the prestige of a world-first chiming mechanism, interest among high-end collectors is expected to be very strong.
Conclusion
With the Grande Double Sonnerie, Blancpain has created a standout achievement in modern haute horlogerie. By introducing a dual-melody chiming system combined with a suite of high complications—including a petite sonnerie, minute repeater, flying tourbillon, and retrograde perpetual calendar—the manufacture has delivered a watch that embodies the pinnacle of acoustic and mechanical craftsmanship. This remarkable timepiece not only reinforces Blancpain’s legacy in the realm of grand complications but also sets a new standard for what a contemporary chiming watch can be.
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General Specifications:
Brand: Blancpain
Model: Grande Double Sonnerie
Reference: 15GSQ 1513 55B
Dial: Openworked
Lume: No
Case Material: Red gold, white gold
Case Dimensions: 47 mm Diameter, 14.50 mm thickness, 54.60 mm lug-to-lug
Crystal: Sapphire Glass
Water Resistance: 10 Meters
Strap: Brown/grey alligator leather strap with a gold folding clasp
Calibre: 15GSQ
Functions: Hours, minutes, perpetual calendar (day, retrograde date, month, leap year), power reserve, flying tourbillon, grande sonnerie, petite sonnerie, minute repeater
Winding: Automatic
Frequency: 4 Hz (28,800 Vph)
Jewels: 67
Components: 1,053
Power Reserve: 96 Hours
Price: CHF 1,700,000
Availability: Now
Limited Edition: No, but production is limited to 2 pieces per year.