====== Greubel Forsey Quadruple Tourbillon ======

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The **Quadruple Tourbillon** is a wristwatch by [[Greubel Forsey]].

Between art and technological innovation, the second pioneering invention by Robert Greubel and Stephen Forsey is situated. It brings both even closer to the absolute summit of watchmaking. The four [[tourbillon]]s of this stunning composition contribute independently to the unique accuracy of the watch. This is made possible by the asynchronous positioning of each of these tourbillons in combination with two autonomous control elements. These are housed each in its own tourbillon cage and connected via a spherical differential with the train wheels of the watch and in this way connected with the time indication. Hence highest virtuosity, and certainly a new chapter of the watchmaking art.

//(Press text)//

Also see:
  * [[Greubel Forsey Quadruple Tourbillon Secret|Quadruple Tourbillon Secret]]

<WRAP ud ud_mod>
**Reference:**
  * GF03 ([[2012]])
  * Quadruple Tourbillon Platinum
  * Quadruple Tourbillon Red Gold
  * Quadruple Tourbillon Black ADLC Titanium
  * Quadruple Tourbillon Blue Platinum
  * Quadruple Tourbillon Blue Red Gold

**Movement:**
  * [[Manual winding]] [[manufacture movement]], 21,600 A/h
  * Four independant [[tourbillon]]s in two double cages
  * Two inner minute tourbillons, 30° inclined, two outer tourbillons with 4 minutes circulation time,
  * 63 [[jewels]]
  * Olived-domed jewels in gold [[chatons]]
  * [[Double barrel]]
  * 534 components
  * [[Power reserve]] 50 h

**Case:**
  * [[Red gold]] / [[Platinum]] / Black ADLC [[Titanium]]
  * Ø 43.5 mm, H 16.11 mm
  * [[Sapphire crystal]], domed, and transparent asymmetrical caseback
  * Lateral window with sapphire form glass
  * Relief engraving of the name of the invention on the manually hammered caseback
  * [[Waterproof]] to 3 atm

**Dial:**
  * Black gold or silver / Blue
  * Openworked

**Functions:**
  * Hours, minutes, [[small seconds]]
  * [[Power reserve indicator]] via arc

**Bracelet:**
  * Black hand-sewn alligator strap with [[folding clasp]]

**Limitation:**
  * Each edition 8 pieces
</WRAP>

===== Video =====
  * [[Greubel Forsey Quadruple Tourbillon Video]], 3:05


{{tag>Watch_models Watches_with_tourbillon Greubel_Forsey_models}}