A. Lange & Sohne Lange 1 Tourbillon Perpetual Calendar

A. Lange & Sohne Lange

Watch new 2012 A. Lange & Sohne Lange 1 combines the two classic complications and purposes as the tourbillon and perpetual calendar.

With the off-center hour dial Lange 1 is designed to provide a very clear vision of the calendar. Inter alia, the manufacturing has thought to have an indication of the months of a ring placed in the distal part of the dial, a choice that has the advantage of not hinder at all the reading time.

The tourbillon with patented stop seconds device, but is mentioned on the front with a sign at 12, but it is only visible through the transparent back.

A. Lange & Sohne Lange

A. The Technical Lange & Sohne have arranged for the first time in a wristwatch the months outside of a circular counter. In its non-visible side and provided with depressions different depending on the length of the months as well as of a toothed wheel which regulates the operation.

This new solution has been filed a patent application. All indicators of the perpetual calendar – Big Date, retrograde day of the week, Ring of the month, leap year indication and moon phase – move with an instantaneous tripping. The mechanism will require to be adjusted manually until 1 March in the year 2100. The lunar phases have the accuracy to lose only one day every 122 years.

The flying tourbillon, a variant of the complication originated in Saxony, makes a complete rotation in one minute. The mechanism of regulation of seconds – Patented-allows pulling the crown to lock the bar for a precise start time.

A. Lange & Sohne Lange

Mount the Caliber L082.1 self-winding, which is not common for a mechanical movement which should move two complications in itself is very energy hungry. In fact, the specification discussing a rotor weighted very sensitive to movement of the wrist; an oscillating weight of platinum on the outer edge of the rotor provides an additional impetus to the mechanism obtained by the greater density of the material compared to gold.

The power reserve is 50 hours and, as said before, this would be achieved and maintained, in a short time. It ‘a different approach to the need for constant force tourbillon every need by definition.

That said, the Lange 1 Tourbillon Perpetual Calendar is expressed in the usual finishes of the highest level. The bridge of the tourbillon and the half-bridge of the intermediate wheel is engraved by hand, the four settings of gold are fixed by four screws screwed blued heat.

The top of the tourbillon cage, not visible from the dial is finished in an even more accurate and meticulous: polish in black on an item so small, angled and complex, can take days of work. The pin which is still the tourbillon has a pin cover in pure diamond.

Lange 1 Tourbillon Perpetual Calendar is the specimen far more complex family Lange 1, without a doubt one of the finest watches presented this year at SIHH 2012. It ‘s available with a box of 41.9 mm in platinum or rose gold metal. In the platinum version will be built in only 100 copies.

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