This Audemars Piguet Royal Oak "Jumbo" Extra-Thin, reference 16202ST, is the closest modern heir to the original Royal Oak designed by Gérald Genta, faithfully preserving the 39mm proportions, thin profile, and octagonal bezel with exposed white-gold screws that made the model an icon. It marks a significant chapter for the line, being the first "Jumbo" fitted with the in-house calibre 7121, the automatic movement that succeeded the long-serving 2121. That movement brings a 55-hour power reserve and a quick-set date while keeping the watch remarkably slim. The stainless steel case measures 39mm across and just 8.1mm in thickness, its brushed surfaces and polished bevels showing the hand-finishing the Royal Oak is known for. A blue "Petite Tapisserie" dial, with white-gold applied markers and luminescent Royal Oak hands, gives the watch its unmistakable character. A definitive expression of the watch that created the luxury steel sports category.