Audemars Piguet updates its most popular model with the Royal Oak Perpetual Calendar Timepiece Reference 26574.1220. It comes in rose gold or stainless steel, with either navy or silvered faces, and features a more complicated, enlarged dial and upgraded movements. In a 41-mm sapphire crystal case back, the luxury watch displays the date, day, month, leap year, and even the astronomical moon and the 52 weeks of the year. A new automatic caliber 5134 movement powers the watch, which is priced at a steep $60,900 for the stainless steel version and $95,700 for the pink gold.