Zenith Chronomaster El Primero Open
- Model no.: 03.3300.3604/69.M3300
- Item no.: PL125517
Zenith Chronomaster El Primero Open with reference no. 03.3300.3604/69.M3300 being an exclusive offer on uhrinstinkt.com
Zenith was the first manufacture to develop a chronograph with automatic winding in 1969. It was aptly and sonorously named "El Primero," which is Spanish for "The First.