At Loupe, we're proud to house a range of Zenith Chronomaster El Primero watches, for timepieces truly worth spending time over. Reach for the stars with the Zenith Chronomaster El Primero collection. With its big and bold proportions, signature tri-colour dial and avant-garde design, these watches boast innovative materials inside and out. But it’s what’s under the dial that’s sure to pique your interest. The El Primero. An in-house movement that was first introduced in 1969 as the world’s first high frequency automatic chronograph movement. Interest piqued? It should be.