====== Greubel Forsey Double Tourbillon 30° Asymétrique ======

{{wst>image_cr|Greubel Forsey|Double Tourbillon 30° Asymmetrical GF02a2|Greubel Forsey Double Tourbillon 30° Asymmetrical|280px}}

{{wst>image_cr|Greubel Forsey|Double Tourbillon 30° Asymmetrical GF02a2 WG|Greubel Forsey Double Tourbillon 30° Asymmetrical (white gold)|280px}}

**Greubel Forsey Double Tourbillon 30° Asymétrique** is a wristwatch by [[Greubel Forsey]].

One of the special features of this reinterpretation lies in the unusual positioning of the rotating Double Tourbillon cage system, between seven and eight o'clock. This Double Tourbillon 30° has been redesigned and now features a new tourbillon bridge, to be displayed "in reverse".

The hand-wound calibre comprises 319 components, including 130 for the cages. It is powered by two mainspring barrels with a 72-hour power reserve oscillating at 3 Hz/21,600 vibrations per hour. The inner cage at 30° and the outer cage rotate in 1 and 4 minutes respectively. The asymmetric case measures 43.5 mm in diameter and 16.13 mm in height. It features an asymmetric sapphire crystal for the display and the back, and a side window.

Also see:
  * [[Greubel Forsey Double Tourbillon 30°]]

<WRAP ud ud_mod>
**Reference:**
  * GF02a2 ([[2017]])

**Movement:**
  * [[Manual winding]] [[manufacture movement]], 21,600 A/h
  * [[Balance spring]] with [[Phillips terminal curve]]
  * Two [[tourbillon]]s, the inner inclined 30°, with circulation time 1 minute, the outer with circulation time 4 minutes
  * 39 [[jewels]]
  * Olived-domed jewels in gold [[chatons]]
  * [[Double barrel]]
  * 319 components
  * [[Power reserve]] 72 h

**Case:**
  * [[Red gold]] or [[white gold]]
  * Ø 43.5 mm, H 16.13 mm
  * [[Sapphire crystal]] domed and transparent caseback
  * Lateral window with shaped sapphire crystal
  * [[Waterproof]] to 3 bar

**Dial:**
  * Black or anthracite ([[white gold]] version)

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

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

**Limitation:**
  * Each version 11 pieces

**Prize:**
  * 545,000 US-$ (2014)
</WRAP>

===== Video =====
  * [[Greubel Forsey Double Tourbillon Asymétrique Video]], 2 17


{{tag>Watch_models Watches_with_tourbillon Greubel_Forsey_models}}