====== PP CH 28-520 ======

{{wst>image_cr|PP|CH 28-520}}

Calibre **CH 28-520** is an [[automatic]] [[chronograph]] movement by [[Patek Philippe]].

Used among others in the current [[Patek Philippe Nautilus 5980|Nautilus 5980]] model.

===== CH 28-520 Family =====

{{wst>template_patek_philippe_ch_28-520}} 


<WRAP ud ud_mov>
**Description:**
  * [[Self-winding]] [[chronograph]] movement
  * [[Column wheel]] mechanism
  * [[Gyromax]]® [[balance]]

**Functions:**
  * Hours, minutes
  * Chronograph with 60-minute and 12-hour mono-counter

**Data:**
  * 28,800 A/h
  * Ø 30 mm, H 6.63 mm
  * 35 jewels
  * 327 parts
  * [[Power reserve]] min. 45 hours, max. 55 hours
  * [[Patek Philippe Seal]]

**Production period:**
  * ?-present
</WRAP>

{{tag>Movements Automatic_movements Chronograph_movements Patek_Philippe_calibres}}