Audemars Piguet Royal Oak Extra-Thin is like the iconic Royal Oak Jumbo ref. 5402ST from 1972. While this redesigned Jumbo maintains the sleek lines of the other Jumbos and most of the core elements present in the ref. 5402, there are subtle differences that are worth discussing.The Jumbo, referred to as Extra-Thin by Audemars Piguet, is fitted with a sapphire crystal display case back just like the previous Jumbo ref. 15202. The original Jumbo 5402 from 1972 featured a unique monoblock case design, making it even thinner and more sleek.Related Replica Audemars Piguet Royal Oak Extra Thin.
The dial is the blue ‘petite tapisserie’ with an almost perfectly identical hue of blue like on the original Royal Oak Jumbo with double batons at 12 and the AP logo at 6 o’clock. Something quite different between the Extra-Thin ref. 15202 and the Jumbo 5402, is that the calendar wheel on the first one matches the color of the dial, while on the latter it was white. Also, the fonts on the calendar wheel and the dial are different between the two of them.
The bracelet is extremely comfortable and slightly thicker than on ref. 5402 but still thinner than the bracelet on ref. 15300 or 15400. The double folding clasp —with side push buttons and AP logo— on this bracelet, has the exact same design and functionality as the one on the last batch of ref. 15300s and on the 15400s.
Just like on all other Royal Oak Jumbos, the Extra-Thin Royal Oak features the legendary Audemars Piguet Calibre 2121 with a pullout crown and non-quick-set calendar mechanism with the date aperture at 3 o’clock. This calibre is the thinnest automatic selfwinding movement —with a central rotor— ever made. It provides a power-reserve of 40 hours and includes 247 parts with 36 jewels.