An octagonal case, a tourbillon movement with fusee-and-chain transmission and a pillar-based construction: the Chronomètre FB 1 has played a major role in defining the identity of Chronométrie Ferdinand Berthoud. Eight years later, the final 38 examples of this calibre will be presented for the first time in a round case, giving life to the Chronomètre FB 2T – Final Edition. An exceptional collection driven by a movement whose entire kinematic chain has been designed as an authentic watchmaking experience.