Portable iPod® speaker systemPerfect for iPod®Â"s, MP3 players and other 3.5mm line out devicesDock fits iPod Nano and Shuffle3.5mm line in port for all other iPod"sOperates on USB power, batteries or AC powerCarrying case included Satellites: Power 4W total RMS, 2 x 1 ½" NdFeB drivers Inputs: iPod® dock connector, 3.5mm input and FM tuner Includes: USB cable, 4AA batteries, 3.5mm stereo input cable, docking adatper, and carrying bagOptional AC Adapter