The Audemars Piguet Royal Oak "Jumbo" Extra-Thin Openworked Yellow Gold 39mm ref. 16204BA.OO.1240BA.01 showcases the brand's expertise in openworked design and ultra-thin craftsmanship. Crafted from 18-carat yellow gold, the 39mm case is paired with a glareproof sapphire crystal, revealing the intricate skeletonized gold-toned movement beneath. Powered by the selfwinding Calibre 7124, this watch offers a 55-hour power reserve while maintaining an extraordinary slim profile of just 8.1mm. The yellow gold-toned openworked dial features white gold applied hour markers and luminescent Royal Oak hands for optimal legibility. The integrated 18-carat yellow gold bracelet, finished with an AP folding clasp, seamlessly complements the case's design. With a water resistance of 50m, this 2023 release blends technical precision with bold aesthetics, offering a glimpse into the mechanical artistry of Audemars Piguet's iconic Royal Oak collection.