192h power reserve28,800 vph (4 Hz)
Caliber 31-505-8J-PS-IRM-CI-J is a manually wound Patek Philippe movement measuring 32mm in diameter and 5.05mm thick. It operates at 28,800 vph and delivers a power reserve of 192 hours from two series-coupled barrels. The movement features the Pulsomax escapement with Silinvar components, an instantaneous day-date mechanism, and small seconds at 6 o'clock.
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Power Reserve
192h
Frequency
28,800 vph (4 Hz)
Diameter
32mm
Height
5.05mm
Display Type
Analog
COMPLICATIONS
DateDayPower Reserve Indicator
FEATURES
Small SecondsInstantaneous Date ChangeHand WindingSilicon Hairspring
Watches with this movement
More Patek Philippe movements
QUICK FACTS
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