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 The construction of perpetual Calendar is one of the high achievement in watch art, but Franck Muller is established master in chronographs' production with complications. In the modern calendar which was entered in 1582 by special order of Pope Gregory XIII, the year consists from 365 days. But the actual duration of the year is longer an average of 5 hours 49 minutes. In the leap year distortion for previous 4 years compensate by the entering of support day-29 of February. Month's wheel makes the full turnover for a year and the wheel of leap year for 4 years. During this time the heart of movement-balance wheel-makes almost two million oscillations on either side. Making measurement time's scheme, there must be done in such a way that the owner of watch should only wind it without introspection in device's details. There is necessary to make movement with unbelievable complication and reliability. In chronographs with perpetual Calender the complication immediately increases: construction is supplemented by wheels, which are made for determination of month, date, day of the week, leap year. Precise adjustment of the watch with such huge number of details requires the highest skill in watch art. The example of such flawless talent is the production perfect chronographs of watch company Franck Muller The Long Island. In elegant model's lines, in its perfect rectangular shape, combination of direct and curved figures express art deco's heritage-the vision 1930, which became one of a source of inspiration for Franck Muller. The newest shape was carefully designed and modeled, special attention was paid to geometric side. Case's streamline resemblance the line of wrist, that is why the chronograph elegantly sits on the wrist. The perception's simplicity and facility indication of time make the watch an exclusive and comfortable in different conditions and situations. The model is equipped with automatic winding and rotor from platinum 950. One more chronograph Long Island Retro-seconds is supplemented with function of counting seconds. It is base on the division of 60 seconds on two parts with detached indication. The first segment has 3 marks from 0 to 30, the second is arc of a circle, which is shifted downwards-from 30 to 60. These chronographs with automatic movement and rotor from platinum 950, which continued the line Long Island, and they are a world premiere.
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