The minute repeater from the beginning is for Astronomical display function, and Audemars Piguet for this specially established a workshop, completely specializing in perpetual calendar and the time equation of two big difficult complex functions. The production of perpetual calendar has always been one of the strengths of the Audemars Piguet. This is the brand virtuosity from generation to generation, and so far the most experienced master who can truly control this skill is less. Due to the extremely sophisticated technology, this mechanical device memory is made in the form of a modular, although based on the general calendar systems, it can automatically distinguish the difference between the months of 30 and 31 days, and the February 29 of every four years, so before the year of 2100 you completely need any manual adjustment for the watch.

Also is with modular design, the time Equation is a relatively new complex function in the strengths of Audemars Piguet, and because it made its debut until 2000. Time equation design concept needs the absolute mastery adept technology, because the low mechanical device not only can let the wrist watch wearer at eyebrow glance could easily know the difference of the legal time with the sun time, it can also master the sunrise and sunset time and days as of the moment.

Whether it is a perpetual calendar or time equation, all are completed independently by the same master, and often need to back and forth for weeks of patience and devotion. First of all, the master must assembly more than one hundred pieces of parts that is constituting a module, and will carry the module that is completed assembly on the movement, then calibration to complete the final process and packing. It is such high end complicated function that makes the audemars piguet replica swiss famous and popular and enjoys high reputation in the watch industry.