The Master Grande Tradition Gyrotourbillon Westminster Perpétuel is the fifth multi-axis tourbillon from Jaeger-LeCoultre, with a size reduction in the redesigned tourbillon component so as to create a more wearable watch.

It’s the latest generation of multi-axis tourbillons to emerge from Jaeger-LeCoultre, following the 2004 Master Gyrotourbillon 1, the 2008 Reverso Gyrotourbillon 2, the 2013 Master Grande Tradition Gyrotourbillon 3 Jubilee and the 2016 Reverso Tribute Gyrotourbillon.

Precision tourbillons are a noted specialty of Jaeger-LeCoultre, as proven by the 2009 Concours International de Chronométrie timing competition, in which the top two prizes were awarded to Jaeger-LeCoultre.

Now, further advancing the art of multi-axis tourbillons, the very limited-edition Master Grande Tradition Gyrotourbillon Westminster Perpétuel, just 18 pieces in total, features a tourbillon that is significantly smaller than those in the preceding Gyrotourbillon timepieces.

As a rule, reducing the size of a mechanism also reduces its error tolerance, which is why successful miniaturization efforts are so highly valued and complex. In creating a smaller tourbillon, Jaeger-LeCoultre has created a truly wearable Gyrotourbillon, bringing high complication out of the watch safe and onto the wrist for everyday enjoyment.

The Westminster chime is familiar to everyone as the famous melody of the Big Ben clock at the Palace of Westminster in London. It is currently undergoing major repairs so it will not be heard again until 2021.

The 43mm JLC Westminster Perpétual carillon minute repeater replicates the chime of the famed Big Ben clock tower in London, with a silence-reduction mechanism to optimize melody cadence.

Its four-phrase melody is composed of four notes played in different sequences and different quantities at each quarter of the hour. The Master Grande Tradition Gyrotourbillon Westminster Perpétuel uses four sets of gongs and hammers to create the Westminster chime to indicate the quarters when the minute repeater is activated, incorporating a complex mechanism that places it at the most prestigious tier of chiming watches.

Precision lies at the heart of the Master Grande Tradition Gyrotourbillon Westminster Perpétuel, with a one-minute constant-force mechanism that provides a consistent level of power for the energy-hungry tourbillon without affecting its chronometric ability.  This results in a precisely jumping minute hand and a more precise minute repeater mechanism.

The Master Grande Tradition Gyrotourbillon Westminster Perpétuel also features the one horological function with the greatest everyday relevance and pragmatic value — the perpetual calendar. As the name suggests, the perpetual calendar is designed to work in perpetuity. It automatically displays the correct date without the need for manual adjustment between months of different lengths. It even takes into account the extra day at the end of February during leap years.

The watch is housed in a sleek new contemporary case that pairs traditional haut-de-gamme finishing with modern, wearable watches at the top of the mechanical watchmaking hierarchy. The watch comes either in a striking deep-blue grand feu enamel or in a more classic silver-grained version — showcasing the mesmerizing multi-axis tourbillon.

How much?

Blue enamel dial: 800,000 Euros

Silver grained dial: 800,000 Euros

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