Presented on January 10, 1969, it was to be the first automatic chronograph ever. The legendary movement took seven years to make. Fully integrated, the construction was built around a column wheel and a central rotor mounted on ball bearings. There would be no additional module. And it was fast. In order to be the most accurate chronograph, it had to beat at a high frequency, and 36,000 vibrations per hour made it the fastest.