The Audemars Piguet Royal Oak RD#2, which at a staggering 6.30mm thick.
AAA Audemars Piguet Replica has always had a soft spot for ultra-thin watches.It was and still is one very thin watch, with an automatic movement that was thinner than most hand-wound calibres. Its modern iteration, the 15202, follows the same idea, with its movement measuring only 3.05mm thick and its case 8.1mm.
The new Audemars Piguet Royal Oak RD#2 Replica Perpetual Calendar Ultra-Thin 26586PT.
Overall thickness of the case: 6.30mm
Overall thickness of the movement: 2.89mm
So, if you consider what we said above concerning the time-and-date Royal Oak Extra-Thin, it means that by adding a perpetual calendar function to this watch, Audemars Piguet Replica Watch has succeeded in shaving almost 2mm off the case and in making a far more complex movement thinner than its simple time-and-date version.