The Audemars Piguet Jules Audemars Equation of Time features one of the rarest complication ever conceived - the Equation of Time. This basically shows the difference between "true" solar time or that which is indicated by a sundial and the "mean" solar time or the time a watch would show when in that very same location. The collection are offered in 18k yellow, white, and rose gold as well as platinum and generally measures between 38mm to 43mm. The exhibition caseback reveals that the Audemars Piguet Jules Audemars Equation of Time beats to the rhythm of an automatic movement with an approximately 40 h power reserve. On the dial are the standard hours, minutes, and seconds and the equation of time perfectly in sync to the perpetual calendar with moonphase.The location of where an Audemars Piguet Jules Audemars Equation of Time was preset is usually printed along the bezel.