Greubel Forsey Grande Sonnerie

Conducting 11 years of research, assembling no less than 935 parts, filing two patents, incorporating Greubel Forsey’s third Fundamental Invention (Tourbillon 24 Secondes), developing an acoustic resonance cage generating an extreme purity of sound, installing eleven functional safety features ensuring unparalleled intuitive ease of use, performing a three-year wearing test… As highlighted by this only partial list of the stages involved, the creation of the Grande Sonnerie was indeed a monumental undertaking by Robert Greubel, Stephen Forsey and their team. This timepiece embodies the quintessence of their expertise and their ideal of horological excellence.