
It wasn’t until Rolex introduced its own in-house chronograph movement in the early 2000s that the Daytona stopped using the El Primero. What few enthusiasts recall today is that, for about a decade, Rolex Daytona watches included a Zenith El Primero automatic chronograph movement. I think the one important point that allows these watches to remain both relevant and interesting in contrast to the Rolex Daytona is Zenith’s history with Rolex.

These watches too are in their own way an “answer” to products that Rolex sells but with lots of Zenith branding. Today, I look at an even more elevated grouping of Zenith Chronomaster Sport watches that include the two-tone reference 51.3100.3600/69.M3100, the all-gold with white dial reference 18.3101.3600/69.M3100 and the all-gold with black dial reference 18.3101.3600/21.M3100.

Zenith priced its steel version with ceramic bezel within a stone’s throw of what Rolex was charging for its steel Daytona with a ceramic bezel watch.

Since the debut of this collection in 2021 with the all-steel model (covered on aBlogtoWatch here), Zenith has had a venerable hit with one major selling point being availability. At a glance, the Chronomaster Sport collection is Swiss Zenith Watches’ answer to the mega-popular Rolex Cosmograph Daytona.
