The visual depth is elevated by subtle contrast of dark tones, most prominently seen on the 1/10th-of-a-second indicator. The El Primero 3620 automatic high-frequency manufacture movement capacitates a power reserve of approximately 60 hours, aided by an efficient automatic bi-directional winding mechanism with a blackened star-shaped rotor. The arresting shape of the open dial is ingeniously incorporated into the skeletonisation of the movement’s bridges and main plate, to form an integral and mesmerising whole. Its latest novelty, the DEFY Skyline Skeleton Ceramic, continues to exemplify ZENITH’s watchmaking excellence while soaring to greater heights by harnessing the unique properties of a proven material.įirst introduced in 2022 as the new heir to the DEFY line of rugged and audacious wristwatches from 1969, the DEFY Skyline collection is now enriched with a brand-new edition equipped with ZENITH’s latest El Primero high-frequency calibre, as the Manufacture honours its legacy of producing industry-leading movements, and encased entirely in black ceramic, a cutting-edge material of known for its extraordinary attribute in being scratch resistant and virtually wear-and-tear proof. The original El Primero bore the world’s first-ever automatic chronograph movement, beating at 36,000 vibrations per hour, a frequency ahead of its time to guarantee exceptional precision. Most revered as the pioneer in the development of the integrated automatic chronograph, dating back to 1969 with the debut of the El Primero, ZENITH has perpetuated the tenet of melding watchmaking tradition with avant-garde innovations since its founding.

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