Revisiting the iconic tri-colour dial configuration that debuted with the iconic A386 in 1969 and which remains a distinctive and instantly recognizable El Primero design element, the latest iteration of the Chronomaster Open retains it entirely with a transparent twist. Somewhere between the sleek sportiness of the Chronomaster Sport and the historically inspired Chronomaster Original for a modern distillation of the essential Zenith El Primero chronograph. More than a simple facelift, the new Chronomaster Open is imbued with the lines and attributes of the latest generation of the Chronomaster collection. With 2021’s introduction of the new and improved El Primero 3600 that boasts a 1/10th of a second chronograph function and improved efficiency, the time had come to adapt and incorporate the latest developments into the emblematic Chronomaster Open. For Zenith, the partially open dial has remained a prominent and coveted feature in many of its Chronomaster references for nearly 20 years. The Chronomaster Open was instant hit, lauded for its daring design that is often imitated but never matched. It marked the first time in the history of watchmaking that a chronograph featured a partially open dial solely to reveal the regulating organ and escapement. In 2003, Zenith introduced the Chronomaster Open with the aim of making the high frequency beating heart of its El Primero calibre as prominently visible as possible. After all, pioneering movements deserve to stand out in inspired and unprecedented designs to truly highlight their ingenuity. It has mastered not only the automatic chronograph, but also the fractional measurement of time by offering 1/10 th and 1/100 th of a second high-frequency calibres.īut performance and precision aren’t the only areas where Zenith has made its mark in the world of chronographs. Since the launch of the revolutionary El Primero calibre in 1969 as the world’s first automatic high-frequency integrated chronograph movement, Zenith has maintained and cultivated its spirit of innovation without ever ceasing break new boundaries and offer even greater levels of precision and performance. In particular, it highlights Zenith’s commitment to the pursuit of perpetual innovation when it comes to watchmaking’s most complex and sought-after complications. For Zenith, “Master of Chronographs” is a testament to the manufacture’s illustrious past and its countless achievements that contributed to the advancement of mechanical chronographs for over 50 years.

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