Greubel Forsey Grande Sonnerie

Grande Sonnerie is a wristwatch by Greubel Forsey.

With this hitherto most complicated watch developed by this manufacturer, Greubel Forsey wins the “Mechanical Exception” award at the 18th Grand Prix d'Horlogerie de Genève (GPHG).

Robert Greubel, Stephen Forsey and their team completed eleven years of research for this model, assembled no less than 935 components, filed two patents, incorporated Greubel Forsey's third basic invention (the Tourbillon 24 Secondes), developed an acoustic resonance cage generating an extreme purity of sound, installed eleven functional safety features, and carried out a three-year wear test.