Founded in 1865 by Georges Favre-Jacot, Zenith has a rich history in the manufacture of Swiss timepieces by producing watches which have become icons. The most notable achievement was the creation of the first integrated automatic chronograph movement - the Zenith Chronomaster - which still to this day is the most precise series-made calibre. An iconic fusion between the Chronomaster open and the colours from the original 1969 Chronomaster,. One of the most accurate movements in the world, the El Primero offers a minimum of 50 hours for the power reserve. The window at the 9 o,clock position shows you the beauty of a working Swiss movement.