====== IWC 79470 ======
The **79470** is an [[automatic chronograph]] movement with a [[rattrapante]] minute hand produced by [[IWC]] based on the [[Valjoux 7750]] from [[2004]] through [[2008]].

===== Details =====
The [[Valjoux 7750]] movement was extremely important to the resurgence of [[IWC]] and the basic design remains in use today. The company has used it for many important innovations since the 1980's, including a [[perpetual calendar]], [[rattrapante]], and [[grande complication]]. The 7750 [[ebauche]] was used for the [[IWC 7900|790 family of movements]] and the basic architecture is the basis for today's [[IWC 69000|69000 family of movements]]. IWC added a [[rattrapante]] mechanism to the basic [[Valjoux 7750|7750]] [[ebauche]] in [[1991]]. This would be the first mass-produced [[double chronograph]] in history, and was an important step in the resurgence of the brand. The complication was designed by [[Richard Habring]], who would go on to design many important and innovative watch movements and to start his own brand.

In [[2004]], IWC created another innovative [[rattrapante]] feature for the 7750 base The [[IWC Aquatimer Split Minute Chronograph]] features a "split minute" hand useful for timing intervals up to 60 minutes. The chronograph operates as usual, with a start/stop pusher at 2 00 and a reset pusher at 4 00. A button at 9 00 causes a hidden minute hand to emerge from under the running time minute hand. Another button at 8 00 causes the minute hand to revert under the running minute hand. The split minute mechanism consists of 30 components and fits entirely inside the existing calibre.

This movement was only used in the Aquatimer Split Minute Chronograph, produced from [[2004]] through [[2008]]. This watch also featured a movable internal bezel using a crown coaxial with the chronograph reset pusher at 4 00.

===== Applications =====
  * [[IWC Aquatimer Split Minute Chronograph 3723]] (2004-2008)


<WRAP ud ud_mov>

**Description:**
  * [[Automatic]] [[split minute]] movement based on [[Valjoux 7750]]
  * Bi-directional winding

**Functions:**
  * Hours, minutes, [[small seconds]] at 9 00
  * [[Chronograph]] with hour counter at 6 00 and minute counter at 12 00
  * [[Rattrapante]] hand with pusher at 10 00

**Data:**
  * Ø 30 mm
  * 30 [[jewels]]
  * 28,800 A/h
  * [[Power reserve]] 44 hours

**Production period:**
  * [[2004]]-[[2008]]
</WRAP>

{{tag>Movements Valjoux_7750 Automatic_movements Automatic_chronograph_movements Rattrapante_chronograph_movements IWC_calibres}}