The most accurate mechanical timepiece ever crafted

April 17, 2005 TAG Heuer released another first at the Baselworld 2005 global watch mecca - the most accurate mechanical timepiece ever crafted, the “Calibre 360” Concept Chronograph. The “Calibre 360” Concept Chronograph is the first mechanical wrist chronograph to measure and display time to 1/100th of a second, thanks to the exceptionally high frequency of its balance wheel, which oscillates at 360,000 beats per hour, 10 times faster than any other chronograph—a rate that until now was considered impossible.

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