Audio Alignment Drivers, enclosure and electronics are balanced for optimum sound. Crystal-clear high end Specially engineered horn-loaded polypropylene tweeters designed for smooth, wide dispersion. Full mid-range Two custom-designed drivers push room-filling mids and mid bass. Fierce bass XdB bass-enhanced side-firing subwoofer and tuned passive radiator deliver formidable bass. Digital FM radio Tune in to clean reception with telescopic antenna and 4 station presets. Dual AUX IN jacks Let your friends jump in and connect up to two additional audio players. Clip-on remote Change the sources; control the speakers, playlist and song navigation all from the remote. Music Pause Automatically pauses music when a call is received on the iPhone. Interference Free Unique design is immune to mobile phone interference, eliminating the need to switch to airplane mode. AC or battery-powered Plug in or lose the wires with up to 30 hours of play with 8 D batteries. High-contrast LCD Always know your beat. Track, artist, album and station display. 7-band graphic equalizer Multiple EQ modes let you select your sound. Onboard controls Control most functions from the unit. Grab handles Moves with the party. Universal dock for iPhone and iPod Recharges while it plays your tunes.