Early Races ended up mainly timed by stopwatches mounted to auto dashboards, but as the complication was shrunk, they had been far more generally seen on wrists, particularly in the F1 and endurance racing heyday amongst the ’50s and ’70s. Chopard's Mille Miglia selection celebrates the world's most gorgeous race. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/