The original Ventura, presented in 1957, went down in watchmaking history as the world's first battery-powered electric watch. Creating an automatic version of a watch famous for its battery-powered movement is a bold move, typical of Hamilton. This model allows you to admire the movement inside. Three-sphere movement with date and power reserve greater than 80 hours, the H-10 features elaborate colimaçon and pearly contrasting patterns for the American Classic models and clean surfaces for the pilot's watches.