ZENITH DEFY Extreme: Lapis Lazuli II And Ultraviolet Push High-Frequency Chronographs Into New Territory
The ZENITH DEFY Extreme was conceived as the most radical expression of the El Primero chronograph. Built around high-frequency precision and uncompromising performance, its dual-escapement architecture remains the only mechanical chronograph in regular production capable of measuring elapsed time to 1/100th of a second.


