The A3818, affectionately called the 'Cover Girl,' has gained recognition for its prominent appearance on the cover of Manfred Rössler's renowned book Zenith: Swiss Watch Manufacture Since 1865
The watch features a bold blue dial with vertical brushing, accented by a distinctive 'shark tooth' racing track around the edge, along with a combined pulsometer and tachymeter. Its innovative scale allows users to measure their pulse within 15 beats, seamlessly transitioning into a practical tachymeter. The chronograph seconds hand features a small luminous paddle, making El Primero one of the most uniquely stylish sports chronographs in watchmaking history.
