Zenith introduces the El Primero Defy 21 at Baselworld 2017

The high frequency El Primero movement is a legend of its own, but now Zenith have pushed the boundaries further with the introduction of the El Primero 21. This movement still beats at 5 Hertz, but a second escapement has been added beating at 50 Hertz dedicated to the chronograph function precise to the 1/100th of a second!