Tirelessly innovating to improve sports timing and the performances of our watches. For 150 years, TAG Heuer has been constantly dedicated to rethinking time measurement. In 1916, its Mikograph was already the first timer to display 1/100thof a second precision. Today, the Heuer Carrera Mikrograph chronograph is the first mechanical watch to indicate 1/100ths of a second by means of a central hand, and to do so in an extremely simple and readable way. In order for the chronograph operation not to interfere with the watch movement, two balance wheels, each with their own transmission and escapement system, oscillate inside the case at their own rate: one at a frequency of 4 Hertz, and the other at 50 hertz (360,000 vibrations/hour). This double construction with its 396 parts and 62 jewels may be admired through the sapphire crystal caseback. The degree of expertise required of the watchmakers capable of assembling such a (COSC-certified) gem, together with the considerable time involved, mean that only 150 of these watches will be available – naturally for those who are quickest off the mark!