The Audemars Piguet Royal Oak Perpetual Calendar Openworked is a luxurious timepiece that showcases the brand's exceptional craftsmanship. Housed in an 18K white gold case, this watch is adorned with 86 brilliant-cut diamonds (~1.55 carats) and 32 baguette-cut diamonds (~2.8 carats) on the bezel, adding a touch of elegance. The sapphire dial offers a glimpse into the intricate Calibre 5135 movement, featuring a perpetual calendar with week indication, day, date, astronomical moon, month, and leap year functions. The 41mm case diameter and 9.9mm thickness provide a balanced and comfortable fit. The watch is water-resistant up to 20 meters and comes with a white gold bracelet set with 876 brilliant-cut diamonds (~5.4 carats), secured by an AP folding clasp.