Zenith Defy 21 El Primero Chronograph Ceramic Openworked Dial 49.9007.9004/11.R923 - BRAND NEW Zenith Defy 21 El Primero Chronograph Ceramic…

The Zenith Defy 21 El Primero ref. 49.9007.9004/11.R923 is one of the most technically and aesthetically bold expressions to emerge from the Swiss manufacture in Le Locle. At 44mm in full ceramic, this is a watch that announces itself with confidence—a purpose-built chronograph for collectors who demand both horological substance and cutting-edge materials.

Zenith's El Primero name carries enormous weight in the watchmaking world. Introduced in 1969, the El Primero movement was among the first automatic chronograph calibers ever produced, and it remains a cornerstone of the brand's identity more than five decades later. The Defy 21 lineage pushes that heritage forward by employing a dedicated high-frequency chronograph oscillator that beats at an elevated frequency specifically for the stopwatch function, allowing for finer timekeeping resolution than a conventional chronograph—a technical achievement that distinguishes this reference from the broader market.

The openworked dial of the 49.9007.9004/11.R923 is an architectural statement in its own right. Rather than concealing the movement behind a solid dial, Zenith removes material to reveal the intricate mechanical choreography within. White indices on the skeletonized surface provide legibility while preserving visual access to the movement layers beneath, creating a dial that rewards sustained attention. It is the kind of design that looks different—and more interesting—every time you glance at it.

The 44mm case is crafted entirely from ceramic, a high-tech material prized in luxury watchmaking for its exceptional scratch resistance, hypoallergenic properties, and the deep, consistent luster of its finish. Ceramic maintains its appearance far longer than conventional metals under daily contact, making this watch as practical as it is striking. The matching ceramic bezel reinforces the monolithic, modern aesthetic, while the rubber strap ensures comfort and durability on the wrist during active wear.

Wrist presence is substantial. At 44mm in ceramic with an openworked dial, the Defy 21 El Primero is unambiguously a statement piece—suited to collectors who appreciate technical horology presented boldly. It wears well against a larger wrist and carries enough visual complexity to hold attention in any setting, from casual to dressed.

Bizak & Co. offers this Zenith Defy 21 El Primero ref. 49.9007.9004/11.R923 brand new, complete with box and papers, at a best price. Whether you are buying your first Zenith or adding a significant piece to an established collection, our team is ready to answer questions and guide your purchase. Contact Bizak & Co. online to buy this reference or to discuss availability and pricing.