Family: xx37 jewels45h power reserve28,800 vph (4 Hz)
The CH 28 520 QA 24H is a caliber manufactured by Patek Philippe. It has a resolutely sporty look and is a connoisseur's choice.
Last updated 7 Oct 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Jewel Count
37 jewels
Power Reserve
45h
Frequency
28,800 vph (4 Hz)
Diameter
33mm
Height
7.68mm
Display Type
Analog
QUICK FACTS
BRAND
TYPE
AutomaticSTATUS
In ProductionMANUFACTURE
In-houseCALIBER FAMILY
xxCOUNTRY
SwitzerlandALSO KNOWN AS
cal. CH 28 520 QA 24H
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