====== Greubel Forsey Différentiel d'Égalité ======

{{wst>image_cr|Greubel Forsey|Différentiel d'Égalité|360px}}

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.

<WRAP ud ud_mod>
**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°
  * [[Phillips terminal curve]]
  * [[Double barrel]]
  * [[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:**
  * [[White gold]]
  * 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
  * [[Power reserve indicator]]

**Wristband:**
  * Hand-sewn alligator with [[folding clasp]]

**Limitation:**
  * 33 pieces
</WRAP>


{{tag>Watch_models Greubel_Forsey_models}}