The Audemars Piguet Royal Oak Jumbo is the original Royal Oak designed by Gerald Genta and first released in 1972. It stands out for its iconic octagonal bezel secured by eight visible hexagonal screws, an integrated stainless steel bracelet, and a 'Tapisserie' patterned blue dial. The watch maintains a slim profile thanks to its ultra-thin caliber 2121 automatic movement, which powers its time and date functions.