Now, battery changes will be fewer and farther between thanks to Panasonic's PowerLast high-efficiency power system, which combines an efficient motor with low-load circuitry for playback time of up to 33 hours on two AA batteries. CD playback abilities include playback of standard CD, audio CD-R, and CD-RW; 24-track random-access programming; repeat and resume (which picks up where the unit left off when last stopped); and skip/search and memory/recall. A hold switch prevents accidental starting, stopping, or track skipping during use or transport. The unit boasts a thin design with operation keys and LCD laid out logically on its top cover.