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  • Technical
  • Striking mechanism

Grande Sonnerie

Greubel Forsey 2017

Men's

Grande Sonnerie square

 

 

The Greubel Forsey Grande Sonnerie commands respect. A

few quantitative elements give some idea of the scale of this undertaking: 11

years of research and development, 935 components assembled inside a case that

measures 43.5 mm in diameter and 16.13 mm high, 11 security functions and two

patents for a timepiece that offers grande and petite sonneries on cathedral

gongs, an on-demand minute repeater, and a 24-seconds inclined tourbillon

escapement. A dual power-reserve display, for the striking mechanism and for

the timekeeping function, completes the picture. Note that the striking mechanism

is automatically wound by rotor whereas the timekeeping mechanism is manually

wound. This is the most complex watch ever by Greubel Forsey, hence between three

and five only will be made each year.

 

 

 

 

Function

  • Function
    Hours, Minutes, Small seconds

Complications

  • Striking watches
    Grande sonnerie
    Petite sonnerie
    Minute repeater
  • Display
    Power-reserve indicator
  • Regulating mechanism
    Inclined tourbillon

Movement

  • Energy supply
    Manual-winding
  • N° of components
    935
  • N° of jewels
    85
  • Power reserve
    72 hours
  • Vibrations
    21600
  • Form
    Round
  • Height/thickness
    11.13 mm
  • Diameter
    36.40 mm

Case

  • Form
    Round
  • Material
    Titanium
  • Height/thickness
    16.13 mm
  • Diameter
    43.50 mm
  • Back
    Sapphire
  • Water-resistance
    30 m

Dial

  • Material
    Gold
  • Colour
    Black

Strap

  • Material
    Alligator
  • Colour
    Black
  • Fastening
    Folding clasp