“Chrono 4 21-42” celebrates 20 years of Chrono 4. After having entirely transformed the reading of time at the dawn of the new millennium, this iconic model is the first and only chronograph in the history of watchmaking to boast 4 aligned counters. The “Chrono 4 21-42″ name is inspired by the lucky numbers recalling the year of the launch and the size of the case. Available in two different choices of bezel, combined with dials featuring different patterns (soleil or clous de Paris), but all with azuré finished counters, Chrono 4 21-42 can be paired with a strap in either alligator leather or rubber, or with the Chaque steel bracelet.