
But not just any caliber, this is a customized El Primero.

The TAG Heuer Carrera Calibre 36 Flyback draws inspiration from the Mikrograph’s design, an exclusive chronograph launched in very limited number some years ago, capable of measuring chronographic time precise to 1/100th of a second thanks to a refined new mechanical caliber and features, for the very first time, a chrono movement with a fly-back function. To mark that event, the Swiss brand unveiled the TAG Heuer Carrera Calibre 36 Flyback, the most complicated and refined Carrera to date. TAG Heuer has marked, in 2013, 50 years from the first Carrera, a sporty timepiece created in 1963 by Jack Heuer whose name, if you’re among the very few not to be aware of it, resembles the Carrera Panamericana, a legendary endurance race back in the years that has nicknamed the most famous large scale sports car ever. The Carrera line-up features two and three-counter chronos, boasting the Heuer (Jack Heuer Anniversary Edition) or TAG Heuer logo and is powered by “entry-level” ( caliber 16 and caliber 17) or in-house calibers such as the 1887 or the calibre 36.

It is not that easy to navigate through the Carrera chrono collection by TAG Heuer, I counted 59 versions on their official website while taking into account those special editions released to celebrate some of the F1 Grand Prixs or made upon request for a special market, you will hardly find on the net.
