The quantity of modernization which has happened during the decades in the Swiss watch industry is astonishing. When the reindustrialization supposed a lot of modifications for the El Primero, Among the pivotal points was the year 1987. While several improvements were seen by the watch, the movement was upgraded by the firm a long time. Modern springs and gears have replaced the majority of the old stamped parts . The watch also includes heart shaped cams produced by LIGA. It made an astounding leap while the El Primero was at a stage of watch technologies. The company determined that this mythical watch required to make its mark about the 21st century at style that was true. This watch’s original frequency was. Zenith chose to give it a huge bump and introduced a 50Hz working frequency Zentih Defy El Primero 21 in Baselworld 2017! It did really »withstand » rational belief and was a really amazing accomplishment. The 21 and Defy in its title did not need any excuse then. A 50Hz frequency meant that it could not measure time ! Not many watches may assert it as a feat they have achieved. In reality concept watches have boasted this feature up till now and Zenith made it a available reality!