Greubel Forsey Différentiel d'Égalité
Greubel Forsey Différentiel d'Égalité
© Greubel Forsey
The Différentiel d'Égalité is a luxury wristwatch from Greubel Forsey.
Its hand-wound manufacture movement is equipped with a patented spherical Différentiel d’Égalité (constant-force), inclined fixed escapement, power-reserve indicator, stop balance wheel and reset on dead-beat seconds.
Movement:
- Hand-wound manufacture movement, 21,600 A/h
- Spherical Différentiel d’Égalité: Uniform torque, rewinding once per second with integrated spring
- Greubel Forsey balance inclined at 30°
- Nickel silver, frosted and spotted with polished bevelling and countersinks, straight-grained flanks, nickel-palladium treatment
- 47 jewels, olived-domed jewels in gold chatons
- 359 components
- Power reserve ca. 60 h
Case:
- Ø 44 mm, H 15.3 mm
- High domed sapphire crystal, sapphire crystal case back
- Water resistant to 3 bar
Dial:
- Grey, openworked
- Hours and minutes hands in gold with SuperLumiNova
- Small seconds, dead-beat seconds and power-reserve hands in polished blued steel
Functions:
- Hours, minutes, small seconds
- Dead-beat seconds
- Stop balance and reset-seconds activated by crown
Wristband:
- Hand-sewn alligator with folding clasp
Limitation:
- 33 pieces