Zenith Chronomaster

In 1969 Zenith introduced El Primero, the first automatic chronograph able to measure short times to a tenth of a second, and the Chronomaster Original is its most faithful descendant. This 39.5mm steel reference reprises the proportions of the 1969 A386 almost exactly, down to the tri-colour overlapping registers on a silvered dial. The El Primero 3600 beats at 36,000 vibrations per hour, sweeping the dial once every ten seconds and indicating 1/10th of a second on the flange.

Reference: 03.3300.3604/69.M3300
Movement: Automatic chronograph, El Primero 3600, 5 Hz
Power reserve: approx. 60 hours
Case: Stainless steel, 39.5 mm
Water resistance: 50 m
Year: 2026 — Full set