
The El Primero caliber 400 is an anachronism, but a wonderful one. The first high-frequency automatic chronograph movement, it was introduced (along with the Seiko 6309 and the Breitling/Heuer/Buren caliber 01) in 1969 and it has, rather astonishingly, persisted down to the present day. The movement’s design, however, is also a relic of its time … Read more