The Zenith El Primero Rainbow is one of the most distinctive sports chronographs produced by the Swiss manufacture during the 1990s. Introduced as part of the Rainbow collection, the watch combines robust sports-watch design with the legendary El Primero high-frequency automatic chronograph movement. Originally developed within a line of waterproof sports chronographs launched in the … Continue reading Zenith El Primero Rainbow | High-Frequency Chronograph | Sports Watch