When many think of Francois-Paul Journe they immediately think of the Chronomètre à Résonance. It is arguably Journe’s most iconic and recognisable timepiece, the quintessence of his craftmanship both aesthetically and technically. At a first glance the Resonance may deceive the public as simply a dual time watch. However, it not only has an appealing dial, but it also has a very exciting and technologically advanced movement. As its name suggests, the Resonance adopts a pair of balance wheels that not only power the two-time zones displayed, but most astonishingly serve together as exciter and resonator which provides more inertia to the movement and results in greater accuracy of time. Abraham-Louis Breguet was the first to discover the principles of ‘resonance’. Breguet’s resonance watches introduced two independent movements within the same case and in so doing, Breguet was able to demonstrate that the balances became regulated by the ‘resonance’ phenomenon, oscillating exactly ...