The Chronomaster Open unites in a spectacular fashion the most rigorous watchmaking tradition with bold contemporary design. This ZENITH model uncovers the very essence of time and reveals, in the openings on its dial, the 36,000 vibrations of its movement: the legendary El Primero. The aperture invites interest as much by the magic it emanates as by the curiosity it inspires. But make no mistake: the Chronomaster Open is first and foremost an example of technological prowess, a timepiece that is 100% technical and 100% passion.