Parmigiani Fleurier was founded in 1996 by Michel Parmigiani, who had established himself since 1976 as one of Switzerland’s leading restorers of complex historical clocks, automatons and singing-bird boxes for museums and private collectors. The Kalpa collection, whose name derives from a Sanskrit term for cyclical time, is defined by
its distinctive tonneau case whose proportions follow the golden ratio and Fibonacci sequence. This Kalpa XL Tourbillon is powered by the manufacture Calibre PF 500, a hand-wound movement with double barrels that combines an exceptional 8-day power reserve with a rare 30-second tourbillon. Unlike the conventional one-minute tourbillon, the faster rotation demands considerably more energy yet more effectively compensates for the effects of gravity on the regulating organ.