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 El primero - 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 'El Primero,. 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.