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Jaeger-LeCoultre’s watchmakers interweave those three complications in the new Jaeger-LeCoultre Calibre 945, a movement that was specially developed to guarantee the highest possible performance. For their version of a Grande Complication, instead of a chronograph they integrated the flying tourbillon as third complication – the most complex version of this gravity-defying escapement. They integrated it into the timing mechanism not only as a regulating device, but as the prominent showpiece of time itself in the perpetual calendar, acting as a hour hand depicting sidereal time, with the dial showing the sky chart of the northern hemisphere. Meanwhile, a sun-tipped pointer completes a full turn of the dial in precisely 24 hours and indicates the zodiac signs as well as the months and days appearing on a ring around its circumference.