The Zenith El Primero is a famous watch known for its high precision and quality. The history of the watch dates back to Year 1969when Zenith introduced a revolutionary new watch equipped with an automatic chronograph movement.

The El Primero caliber movement was the first watch movement to operate at a frequency of 36,000 vibrations per hour. This enabled the watch to Accuracy of 1/10 second , making it the most precise production chronograph of its time. The El Primero was also the first chronograph movement capable of starting and stopping the stopwatch function without delay. Although the El Primero movement was a breakthrough in watchmaking, Zenith struggled to keep its watchmaking production profitable in the years that followed. In the 1970s, Zenith was acquired by the Swiss company Movado, which decided to discontinue production of the El Primero.

However, some of the last El Primero movement productions were saved by then-Zenith employee Charles Vermot, who hid the tools and machinery in a basement to protect them from destruction. This decision later proved to be wise, as the El Primero returned to the market in the 1980s and experienced a renaissance. Since then, the El Primero has become one of the most recognizable and sought-after chronograph movements, used in a wide variety of watch models. Today, the Zenith El Primero is known for its high precision, durability, and exceptional performance, making it a favorite among watch enthusiasts around the world.