TAG Heuer Watch Monaco Chronograph. A Calibre 12 Automatic Chronograph which takes the iconic design of the Monaco and reinvents it for the 21st Century. Based on the radically new and award winning design of the Monaco V4, the Monaco Calibre 12 LS Chronograph has an innovative Linear System. The LS shows current second with a horizontal display at 3 o'clock. Add another linear display indicating the date, and the unique design of the chrono counters, and you have an avant garde chronograph to take into the next millenium.