The Chronographs are fitted at 3, 6, and 9 o’clock markers and are controlled by two push buttons which are placed over and below the crown. The Zenith Chronomaster collection is fitted with features such as Date, Open Heart, Small Seconds, Tachymeter, and 1/10th seconds Chronograph. The series employed under this collection are Sport, Original, Revival, and El Primero Open. The identity of a timepiece from the Zenith Chronomaster is a set of chronographs stamped on the dial. The famed movement, El Primero was fitted inside this collection and to this day houses inside the Chronomaster’s case. Taking its influences from the 60s and 70s, the Chronomaster collection bifurcates the art of watchmaking with simplicity. This marked the unprecedented growth of the Chronomaster collection and the El Primero with timepieces such as Chronomaster Open, Chronomaster Sport, and Chronomaster Revival. First launched in 1994, the Chronomaster collection was the first one to display the El Primero movement with a sapphire crystal case back. The story of the Zenith Chronomaster collection is very well imbibed with the El Primero.

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