Audemars Piguet
AP cal 4302
Swiss lever · introduced 2012
Beat rate
28,800 vph
Power reserve
60h
Jewels
40
Introduced
2012
Escapement
Swiss lever
The AP cal 4302 is the current Royal Oak manufacture automatic, succeeding the 3120 in the Reference 15500 and related models. It shares the same Cotes de Geneve, anglage, and hand-finishing standard as its predecessor and retains the 22-carat skeletonized gold rotor. The primary change from the 3120 is improved power reserve from 50 to 60 hours, achieved with a revised gear train. The skeletonized rotor is visible through the exhibition caseback and is a defining visual element of Royal Oak ownership.
Specifications
Beats per hour
28,800
Jewels
40
Power reserve
60h
Diameter
26.6mm
Height
4.26mm
Escapement
Swiss lever
Introduced
2012
Finishing
Haute horlogerie
Service interval
8 years
Service cost tier
Haute
Complications
date
Known service issues
- Hand-finishing requires AP-trained watchmakers to preserve anglage and surface work at service; generic service destroys resale value
- Date corrector lever spring is a wear point after extended service intervals
Notable in
- Audemars Piguet Royal Oak 15500ST
- Audemars Piguet Royal Oak 15500OR
2 watches in our catalog share this movement
Priced examples run $18,000 to $38,000 (2 of 2 have a band). The movement is identical, so the difference is case, bracelet, dial and name.
- Audemars Piguet Code 11.59 Selfwinding$18,000–$28,000
- Audemars Piguet Royal Oak Selfwinding 41 (Modern)$28,000–$38,000
Buying advice
Practical guides for buying a watch with this caliber on the pre-owned market: