Crystal 104.9 FM is a radio station focused on regional Mexican music. It offers programs that pay tribute to the classics of the genre, as well as spaces dedicated to recent musical hits. Its team of announcers provides moments of entertainment and humor during broadcasts, in addition to presenting the most important news in brief informational capsules.

This station is part of Grupo Siete and broadcasts from Tenancingo on frequency 104.9 FM. It can also be listened to live online through its official website.