Zenith was established in 1865 by Georges Favre-Jacot and is one of the oldest continuously operating watchmakers. Zenith watches were made famous for providing aviation pioneers with precise timepieces despite the extreme conditions. The notable aviation links  The renowned El Primero movement, an automatic chronograph caliber – capable of measuring intervals as short as 1/10th of a second, famously powered the first automatic Rolex Daytona in 1988.