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Pre-SIHH 2014: Jaeger-LeCoultre - Master Ultra Thin Minute Repeater Flying Tourbillon Ref. 1313520

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During the Salon International de la Haute Horlogerie (SIHH) 2014, Jaeger-LeCoultre will present the eleventh creation of the exclusive Hybris Mechanica collection: the Master Ultra Thin Minute Repeater Flying Tourbillon.
With a height of just 7.9 mm, this timepiece is the slimmest minute repeater in its category.
Featuring a tourbillon with flying balance-wheel, the Hybris Mechanica Eleven (as it is also referred to) introduces several new patented solution, including a high-performance new balance-spring, a peripheral automatic winding system, a retractable single push-piece, and a silent-timelapse reduction system for the minute repeater. 

At 6 o'clock, the flying tourbillon ensures a full view of both balance-wheel and spring that may both be observed in motion. This construction approach contributed to reducing the overall thickness although it required rethinking the regulating organ and developing a new balance-spring specifically hand-crafted in the Jaeger-LeCoultre Complications workshop. 
The new silent-timelapse reduction system provides a solution to a problem occurring with minute repeaters: a minute repeater strikes the hours, quarters and minutes on demand but when there are no quarters to be struck, there is a lengthy silent timelapse between sounding the hours and the minutes. The system invented by Jaeger-LeCoultre detects the absence of quarters to be struck and thus eliminates the marked pause between striking the hours and minutes. 

To provide more space and achieve the ultra-thin dimensions, the winding is handled by a oscillating peripheral weight with a platinum segment visible through the narrow openings on the silver-toned, grained dial. This platinum segment moves freely in either direction. However only clockwise rotation actually winds the calibre.
The Hybris Mechanica Eleven is equipped with a discreet locking system at 8 o’clock. Actuating it brings out the push button that triggers the minute repeater. Once the minute repeater is activated, the push button returns to its initial recessed position, thus ensuring that nothing disturbs elegant appearance of the watch.

The automatic movement is accommodated in a new 41 mm case (inspired by a “knife-shaped” 1907 pocket watch) made of extra-white gold, a metal which guarantees excellent acoustic qualities. The bezel, the sides and the tapering lugs are all entirely hand- polished. Beating at 21,600 vph, the Jaeger-LeCoultre Calibre 362 movement is crafted, assembled and decorated by hand and offers 45 hours of power reserve.
The Jaeger-LeCoultre Master Ultra Thin Minute Repeater Flying Tourbillon (ref. 1313520) is a 75-piece limited edition.

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