It's hard to imagine the industrial zone on the edge of La Chaux-de-Fonds without Tag Heuer. In the space of 24 months, the firm has doubled the size of its production facilities to accommodate its headquarters, set up its 360 Museum and, in the same breath, increased its workforce by 30%. Same story at the brand's other sites in Sion and Cornol. There are currently some 60 vacancies to be filled at Tag Heuer, whose growth is now driven as much by watches as by eyewear. And the brand is about to unveil its first mobile phones, showing that Tag Heuer is at the head of a vast micromechanical potential with multiple applications Jean-Christophe Babin was talking to Christophe Roulet