The Audemars Piguet Royal Oak Perpetual Calendar Wall Clock is the ultimate watch goody and one of the most coveted clocks out there. Released by AP as a super-sized version of the Audemars Piguet Royal Oak Perpetual Calendar ref. 26574 in stainless steel with a silvered dial, this amazing clock features a stainless steel case measuring 16 inches —40 centimeters— in diameter and 3.5 inches —8.9 centimeters— in thickness. This clock also features a very complex quartz mechanism that controls all the perpetual calendar indications as well as a secondary mechanism that controls the time-keeping function.