====== IWC 89900 ======
**Cal. 89900** is a high-end [[manufacture]] [[tourbillon]] [[flyback]] [[automatic chronograph]] with [[retrograde]] date produced by [[IWC]] since [[2017]].

===== Details =====
IWC had long used [[IWC 7900|a family of automatic chronograph movements]] based on the [[Valjoux 7750]]. These were not only used in basic [[chronograph]] watches but [[complicated]] pieces, including [[grande complication]] and [[tourbillon]] watches. Two important complications on that base were the [[perpetual calendar]] and [[rattrapante]] modules that helped re-establish IWC as a maker of advanced watch movements. IWC had never had a [[flyback]] chronograph, however, and many buyers looked down at the pedestrian base on which these complications were developed. In [[2007]], IWC introduced a new [[IWC Da Vinci Chronograph 3764|Da Vinci Chronograph, Ref. 3764]] with an all-new [[in-house]] movement developed by [[Kurt Klaus]]. The new [[IWC 89360|Cal. 89360]] was an advanced design with a [[flyback]] chronograph, efficient [[Pellaton winding]], and power reserve of 68 hours, even while operating at 28,800 A/h.

In [[2017]], IWC paired this new movement with a [[tourbillon]] and [[retrograde]] [[date by pointer]], resulting in this **Cal. 89900**. It remains in production [[as of 2019]].

===== Applications =====
  * [[IWC Da Vinci Tourbillon Retrograde Chronograph 3931]] (2017-present)
  * [[IWC Portugieser Tourbillon Retrograde Chronograph 3940]] (2017) unique piece


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**Description:**
  * [[Automatic chronograph]] [[flyback]] [[tourbillon]] [[retrograde]] date movement
  * Bi-directional winding ([[Pellaton winding system]])

**Functions:**
  * Hours, minutes central
  * [[Flyback chronograph]] seconds
  * [[Open heart]] [[tourbillon]] at 6 00
  * [[Retrograde]] [[date by pointer]] at 9 00
  * [[Chronograph hours]] and [[chronograph minutes]] at 12 00

**Data:**
  * Ø 30 mm
  * Height 9.9 mm
  * 42 [[jewels]]
  * 375 components
  * 28,800 A/h
  * [[Power reserve]] 68 hours

**Production period:**
  * [[2017]]-Present
</WRAP>
===== Weblinks =====
  * [[https://www.iwc.com/us/en/calibre-family/89000.html|Calibre Family 89000]], iwc.com


{{tag>Movements Automatic_movements Pellaton_movements Automatic_chronograph_movements Flyback_chronograph_movements Tourbillon_movements IWC_calibres}}