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Zenith Class Open 40mm
Model Number: 03.0510.4021-73.C492
A window on the dial of the Zenith Class Open chronograph allows the wearer to view the inner workings of the 36,000 beats per minute El Primero movement. In addition, the power reserve indicator of the watch is mounted on the hour axis of the watch, a feature unique to this El Primero caliber. The cobalt dial combines harmoniously with the polished stainless steel case and black crocodile strap.
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