A tiny motor, which consumes less energy and ignores magnetic fields: a company from Besançon has developed a "revolutionary" watch with a silicon heart, betting on relaunching French watchmaking. "It's a somewhat unique object because it's a world first. It's a technological turning point," assures Jean-Baptiste Carnet, co-general director of SilMach, on the occasion of the Wednesday launch of the watch called "TheTimeChanger"