The Audemars Piguet Royal Oak Jumbo Ultra Thin Blue Dial (Ref. 15202ST.OO.1240ST.01.A) pays homage to the legendary Royal Oak, first designed by Gérald Genta in 1972. This 2017 model retains the iconic design elements of the original, combining timeless elegance with technical sophistication. The stainless steel case measures 39 mm in diameter and impresses with its slim profile of just 8.1 mm , giving the model a particularly elegant look on the wrist. The characteristic octagonal bezel with visible white gold screws is polished and satin-finished, creating a harmonious interplay of light and shadow. The deep blue dial is adorned with the famous "Petite Tapisserie" pattern—a delicate guilloché design that underscores the intricacy and precision of Audemars Piguet's watchmaking expertise. The applied, faceted white gold indices and luminous Royal Oak hands ensure clear legibility. The date display at 3 o'clock blends seamlessly into the overall design. The watch is powered by the Caliber 2121 , an ultra-thin automatic movement measuring just 3.05 mm thick. The movement consists of 247 components and operates at a frequency of 19,800 vibrations per hour (2.75 Hz) . Visible through the sapphire crystal caseback, the 21-carat gold rotor is adorned with the Audemars Piguet crest. The integrated stainless steel bracelet with polished and satin-finished links offers maximum comfort and is secured with an AP folding clasp. The Royal Oak Jumbo Ultra Thin embodies the perfect balance between sporty character and classic elegance—a true masterpiece of haute horlogerie. You receive a 1-year warranty on the functionality of the movement.