

3600, with some significant improvements, and celebrates this with an equally carefully revised Chronomaster Sport collection: That was until today, and now the brand presents a carefully upgraded version, called Cal.

The movement was so iconic and proved future-proof that Zenith largely refrained from chaining ‘the winning team’. Without it, however, the entire watch industry would look different even. The El Primero movement is something like the ‘raison d’être’ for the Zenith: without it, the manufacture would very likely not exist anymore.

3600) in 5 decades: 1/10 of a second, more autonomy, conventional crown positions, and revised chrono mechanics, clothed in a new old dress – ´Chronomaster Sport` The venerable El Primero gets a first substantial upgrade (Cal. Zenith ´Chronomaster Sport` – a new dress and the El Primero Cal.
