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(u-s:b /Chronoswiss) It can't be said differently: Chronoswiss is getting complicated. Pretty complicated in fact.
After the exclusive wristwatches with quarter repeaters and flying Tourbillon, the Munich-based watch manufacturer now comes up with a perpetual calendar watch. Already in 1985, when Gerd-Rüdiger Lang was significantly involved in the renaissance of mechanical timekeeping, he also offered wrist-watches whose calendar-based accuracy would last until February 28, 2100. Therefore, they sufficed according to what Gajus Julius Caesar’s created in 45 B.C. in collaboration with the astronomer Sosigenes, which most likely was his politically most significant accomplishment in history: the so-called Julian Calendar. Basically, the same calendar with its progression of three normal years of each 365 days and a leap-year with 366 days has lasted until the present. Only a small blemish caused Pope Gregory the XIIIth to act. Not a big deal but still. The Julian year was all of eleven minutes and 14 seconds or 0.0078 days too long. They mixed up the Christian course of the year and urgently had to be eliminated. How? Simple! In the future, the 29th of February had to be skipped in all secular years that couldn’t be divided by 400. In other words: in 1700, 1800 and 1900, that day did not exist. In 2100, 2200 etc. it will be eliminated as well.
Quem juckat? Latin students would say. So, who cares?
That’s what Gerd-Rüdiger Lang thought about with his current “complication”. It is linked to the inheritance of great master watchmakers such as Thomas Mudge, who most likely presented the first pocket-watch in 1764, which was able to correctly handle different lengths of months in normal- as well as leap-years. It therefore possessed what is now commonly called the eternal calendar. The first wrist-watch of this complex genre followed exactly 163 later, supplied with a hand-wound movement. The first Chronoswiss-models with eternal calendar already had automatic movements. They were then manufactured by ETA. But the brand-new model contains the exclusive Chronoswiss manufacture-Caliber C. 127, which most reliably and precisely drives the complicated app. 50-part calendar-module.
Lang’s philosophy is based on the systematic examination of the horological tradition. Part of this examination is the subtle knowledge pertaining to the lengths and the proportions of the hands, the design of the dial and the execution of the case. When it comes to the horological application, functionality, dependability, precision and craftsmanship detail are the top priorities.
This statement can be confirmed in no time at all with one glance through the sapphire-crystal base at the automatic Chronoswiss caliber C.127. The balance-wheel makes 21,600 vibrations per hour. The ball bearing rotor passes its stored energy very efficiently to the tension spring. Entirely wound-up, its power-reserve lasts for about forty hours. Things are different when it comes to the intricate calendar-gears. It accomplishes its calendar-tasks beneath the dial and is hidden from curious looks. But not because it has something to hide, but only because of technical reasons. After all, three staffs which indicate the day of the week, the date and the month as well as a lunar disk protrude outward.
The specialty of the calendar-module 5800 C consists of a level-disk (see attachment with technical drawing of the module), which turns around its own axis once every four years. Grooves in the circumference indicate the lengths of the different months to the mechanism. Contrary to the ordinary, the lunar disk also turns to the left since Gerd-Rüdiger Lang desired a toppled indication of the livid moon for aesthetic reasons.

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Chronoswiss 

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