Enhanced chronometry combined with refined finishings.
In constant dialogue with the world that inspires it, the Royal Oak has seen countless evolutions over the years. Our Selfwinding Chronograph Calibre 4401, now adapted to the Royal Oak, features refined finishings, including Côtes de Genève, satin brushing, circular graining, circular satin and polished chamfers.
Discover more on : https://aplb.ch/SavoirFaire
Total diameter: 32 mm
Frequency: 4 hz 28,800 vph
Number of jewels: 40
Power reserve: 70 h
Number of parts: 381
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