CH 28-520 IRM QA 24H
Automatic Chronograph
The CH 28-520 IRM QA 24H represents Patek Philippe's inaugural in-house self-winding chronograph movement. Chronograph: Flyback, column wheel. Additional features: Power reserve indicator.
Caliber Details
- Manufacturer
- Patek Philippe
- Type
- Automatic Chronograph
- Frequency
- 28800 vph
- Power Reserve
- 55 h
- Jewels
- 40
- Diameter
- 33.00 mm
- Display
- Analog
- Hands
- Day / Night Indication, Hours, Minutes
