MEGABASS and Bass Reflex Speaker System for enhanced audio quality in a compact design * Front loading CD tray with MP3, CD-R/RW format compatibility * Digital Synthesized AM/FM Radio Stereo Tuner with 30 Station Presets * 3.5mm Auxiliary Stereo Audio input jack for universal digital music player, MP3/MP4 Player, iPod, iPhone, Smartphone & Tablet connectivity * Completely portable device, can be powered with supplied AC Power Cable or bu using Size "D" Batteries (x6, not included)