Patek Philippe
Patek cal 324 SC
Swiss lever · introduced 2006
Beat rate
28,800 vph
Power reserve
45h
Jewels
29
Introduced
2006
Escapement
Swiss lever
Patek cal 324 SC is the movement in the Nautilus 5711/1A and related references, combining a slim 3.3mm height with Gyromax free-sprung balance and Spiromax hairspring. The Gyromax balance allows fine-adjustment of inertia by repositioning eccentric gold weights, and the Spiromax silicon hairspring offers magnetic resistance without the fragility of traditional metal hairsprings. All surfaces carry Cotes de Geneve, beveling, and anglage consistent with the Patek Philippe Seal.
Specifications
Beats per hour
28,800
Jewels
29
Power reserve
45h
Diameter
27.0mm
Height
3.3mm
Escapement
Swiss lever
Introduced
2006
Finishing
Haute horlogerie
Service interval
8 years
Service cost tier
Haute
Complications
datequicksetcenter seconds
Known service issues
- Patek Philippe Seal service requirements mean only authorized service centers can restore the movement to specification; independent service voids the Seal
- The slim profile means the mainspring barrel is compact; precise winding habits extend service intervals
Notable in
- Patek Philippe Nautilus 5711/1A
- Patek Philippe Aquanaut 5167A
- Patek Philippe Calatrava 5196G (later production)
Buying advice
Practical guides for buying a watch with this caliber on the pre-owned market: