 DAB devices perform band-scans over the entire frequency range, presenting all stations from a single list for the user to select from.DAB can carry "radiotext" (in DAB terminology, "Dynamic Label Segment", or DLS) from the station giving real-time information such as song titles, music type and news or traffic updates, of up to 128 characters in length.This is similar to a feature of FM called RDS, which enables a radiotext of up to 64 characters.