Mazda MX-5 Owner's Manual page 351

Interior Features
Audio System
*
Operating the Digital Audio Broadcasting (DAB) Radio (Type C)
What is DAB radio?
DAB radio is a digital broadcasting system for radio.
DAB radio provides a high-quality radio sound source using an auto frequency switching
function in boundary areas.
By displaying the radio text, information such as the song name and artist name can be
displayed.
NOTE
This unit is also compatible with DAB radio.
5–57
*Some models.