====== IWC 79230 ======
The **79030** (and derivative **79230** and **79420**) is an [[automatic chronograph]] [[rattrapante]] movement produced by [[IWC]] based on the [[Valjoux 7750]] since [[1991]].

===== 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. The Double Chronograph lasted in production to this day and the design has proliferated after the IWC patent expired in [[2012]].

**Cal. 79030** started with a basic Valjoux 7750 before being disassembled by IWC. The original components are refinished and gold plated and the rattrapante mechanism is added. In [[1996]], IWC began changing the [[regulation]] system from the original Valjoux "fine regulator" to the [[Triovis]] system. This movement was renamed **Cal. 79230**. In [[2012]], the movement was again updated and is now known as **Cal. 79420**.

The only watch still using this movement as of [[2019]] is the [[IWC Pilot's Watch Double Chronograph 3718|Ref. 3718 Pilot's Watch Double Chronograph]].

===== Applications =====
  * 79030
    * [[IWC Pilot's Watch Double Chronograph 3711]] (1992-1995)
  * 79230
    * [[IWC Pilot's Watch Double Chronograph 3713]] (1996-2005)
    * [[IWC Pilot's Watch Double Chronograph 3718]] (2005-2011)
    * [[IWC Pilot's Watch Double Chronograph 3799]] (2007-2011)
  * 79420
    * [[IWC Pilot's Watch Double Chronograph 3718]] (2011-present)
    * [[IWC Ingenieur Double Chronograph 3765]] (2011-2013)
    * [[IWC Pilot's Watch Double Chronograph 3778]] (2012-2016)


<WRAP ud ud_mov>

**Description:**
  * [[Automatic]] [[rattrapante]] 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, 7.9 mm thick
  * 29 [[jewels]]
  * 21,600 A/h
  * [[Power reserve]] 44 hours

**Production period:**
  * [[1991]]-Present
</WRAP>

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