In 2017 Zenith leads watchmaking into the world of 1/100th of a second accuracy with the grand release of the Defy El Primero 21, a chronometric reinvention of accuracy and reliability and the ultimate embodiment of the spirit of innovation that has coursed through Zenith’s blood for the past 150 years. A legend reborn, the Zenith DEFY EL PRIMERO 21 represents a quantum leap in both performance and mechanical design.