Greubel Forsey Grande Sonnerie
Greubel Forsey Grande Sonnerie
© Greubel Forsey
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.
Movement:
- Manual winding manufacture movement, 21,600 A/h
- Repetition with automatic winding
- 935 components
- 85 jewels
- Power reserve 72 h
Case:
- Ø 43.5 mm, H 16,13 mm
- Sapphire crystal domed and transparent caseback
- Lateral window with shaped sapphire
- Waterproof to 3 atm
Dial:
- Multi-level in gold, black colour
- Window showing the hammers and the gongs
- Gold hour markers
- Gold display sectors
Functions:
- Hours, minutes, small second
- Power reserve indicator, indication of the striking power reserve
Bracelet:
- Hand-sewn Alligator strap with folding clasp