In 2006, Chopard acquired the rights to the name Ferdinand Berthoud, but the fruits of its labour were only revealed nine years later, with the Ferdinand Berthoud FB 1 Chronometer. Nautical references abound in details like the four sapphire portholes in the case middle. These showcase the fusee-and- chain mechanism, a device used extensively in marine chronometers like Berthoud’s maritime clock M.M. No. 6, which is stored in Chopard’s museum and served as the inspiration for the watch.