Explore the selection of Zenith Defy El Primero 21 watches at Loupe, for Swiss luxury chronograph timepieces that we can’t get enough of. The epitome of Zenith’s endless pursuit for precision can be found in the core of every Zenith Defy watch. Blending futuristic forms and materials, Zenith continues to surpass its own legacy by setting new standards of performance and style with this collection. But how do you take a really impressive watch up a gear? You add one of the world’s most precise in-house movements to date, with the El Primero.