The Zenith Chronomaster Sport, launched in 2021, is a 41 mm automatic chronograph. Reference 03.3100.3600/69.M3100 has a stainless steel case, a black ceramic bezel with a tachymeter scale and a sapphire crystal. It runs the El Primero 3600 calibre, with a chronograph that times to one-tenth of a second and a power reserve of about 60 hours.

The movement is an updated version of the El Primero that has beaten at 5 Hz since 1969, and the central chronograph hand makes one revolution every ten seconds. The watch has a tri-colour set of subdials in the style of the original A386.

It was well received as a more affordable way into the El Primero line, and reviewers praised the movement and the dial. It remains in production.