2005 · Zenith
Port Royal V - 01/02.0451.400
Shown in the order they were catalogued.
Features
Date
A feature that displays the current day of the month, typically in a small window on the dial, commonly placed at the 3 o'clock or 6 o'clock position.
Automatic Chronograph
A chronograph watch powered by automatic (self-winding) movement, featuring both timekeeping and the ability to measure elapsed time with a stopwatch function.
The Zenith El Primero 400Z is a renowned automatic chronograph movement known for its precision and innovation. Introduced in the late 1960s, it was one of the first automatic chronograph movements, making it a significant milestone in horological history. The El Primero 400Z operates at a high frequency of 36,000 vibrations per hour (vph), allowing for a remarkable accuracy. This high beat rate is a defining characteristic of the El Primero series and the Zenith chronographs.