The Tourbillon Cardan is designed to reach new heights of chronometric precision. It combines three principles. The first: the tourbillon. The mechanism patented by Abraham-Louis Breguet in 1801 was designed to compensate for the differences in rate, in vertical positions. For Greubel Forsey, this was not the end, but the very beginning.

While most tourbillons have a revolution of 60 seconds, that of the 8th Fundamental Invention is almost four times faster. Just 16 seconds. This is the fastest yet for a Greubel Forsey tourbillon. It moves through more positions in less time, and therefore offers a much higher average performance.