Zenith brings back the first El Primero watch with a gradient dial from 1969, we are talking the Chronomaster Revival A385. Zenith is bringing back one of the earliest and most emblematic El Primero-equipped chronographs from the earliest days of the revolutionary calibre in the form of a Chronomaster Revival model. 1969 was certainly a year to remember for Zenith and would go down in the annals of watchmaking history as the year that forever changed the chronograph. It was the year that the Zenith El Primero, the world’s first automatic high-frequency chronograph, was unveiled to the world.