Crafted in hand-finished white ceramic. this Royal Oak Perpetual Calendar features day. date. month. astronomical moon. and week of the year. The leap year indication �?pioneered by Audemars Piguet in 1955 �?is also featured on the “Grande Tapisserie�?decorated dial. White ceramic case. glareproofed sapphire crystal and caseback. screw-locked crown. Blue dial with “Grande Tapisserie�?pattern. silver-toned counters. white gold applied hour-markers and Royal Oak hands with luminescent coating. blue inner bezel. White ceramic bracelet with AP folding clasp in blackened polished steel.