Since that date, the firm's bold and innovative spirit, its dedication to the high-precision measurement of infinitesimal fragments of time and its quest for excellence in the design and fabrication of its products constitute the very soul of TAG Heuer. From its very first patent for a chronograph mechanism in 1882 to the introduction, in 2004, of a revolutionary new automatic movement (the Monaco V4), TAG Heuer continues to be at the forefront of some of the most spectacular innovations in watchmaking history.