Today we are talking about a topic that typically gets overlooked. How to set your watch is as important as knowing your watch from A to Z. Setting a perpetual calendar is never an easy process, even when the watch is equipped with one or two correctors only, or if everything can be set via the crown —like on many of the Jaeger-LeCoultre Perpetual Calendars. When it comes to the Audemars Piguet Royal Oak Perpetual Calendar ref. 26574 it is better to be safe than sorry.