Earlier this year Audemars Piguet announced their collaboration with John Mayer and his take on the Royal Oak Perpetual Calendar. The 41mm watch case and bracelet is made of 18-carat white gold with a dark blue faceted dial that is described as a “Crystal Sky.” The watch is powered by the self winding perpetual calendar, Calibre 5134. The watch is extremely limited and will be impossible to get for most people being a limited edition run of 200 units. The retail price for the watch will also be a hefty $180,700.