iCraig Tower Speaker System with Digital FM Radio features built-in 4 high powered speaker (4 x 5W RMS) system, total output power: 20W RMS. Digital volume control and digital PLL FM radio. Preset 20 stations and aux in audio for TV and other devices (includes left and right audio jacks). Aux in jack 3.5mm for MP3. Designed for iPod/iPhone/iPad, Digital FM Radio with Aux In.