Zenith have been manufacturing fine Swiss Watches since 1865. Especially well known for their improving, El Primero High Beat Movement which is distinguished by the spectacular cadence of 36,000 vibrations per hour, an integrated movement construction, as well as a power reserve that is exceptional for such a high frequency. The El Primero caliber has constantly evolved over the years, regularly enriched with additional complications, original mechanism and new materials. It now comes in 23 different version, the most recent of which is the Defy's El Primero 21.
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Introducing the Zenith Defy El Primero 21

The new 1/100th second Chronograph movement from Zenith, the chronograph second hand does a full rotation every second. This watch houses the famous El Primero movement with it's high beat movement which runs at 36,000 VpH. Zenith are (rightly) very proud of this movement and have skeletonised the dial to show off the stunning inner workings.
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El Primero: Elegance & Precision

El Primero translates into English as The First, the movement was The First to run at 36,000 vibrations per hour which improves precision and stability of the mechanical movement and in itself is an exceptional watchmaking advancement. In recent years Zenith have improved the movement, using new technologies they have refined and improved the power reserve and endurance of the movement. Widely considered among watch aficionados as the best chronograph movement in it's price range, the wearer can be proud of both the style and the quality of the watch.
El Primero : The First