Summary • Blancpain unveils its most complicated watch, the Grande Double Sonnerie, after eight years of development • Features include grande/petite sonnerie, minute repeater, flying tourbillon and retrograde perpetual calendar • It features a two-melody grande sonnerie (Westminster/Eric Singer from KISS)

The Blancpain Grande Double Sonnerie is presented as the most complicated watch in the brand's history, opening a new frontier in grand complications through an unprecedented combination of functions and musicality.

Developed over eight years, the timepiece integrates 21 patents and more than 1,000 components, all designed and assembled in-house at the brand’s Vallée de Joux workshops. The resulting timepiece achieves a watchmaking first by featuring a grande sonnerie, petite son

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