TuneBox is a speaker system for iPod shuffle that also charges your iPod while playing music. Though it's designed to visually complement the iPod shuffle, TuneBox delivers great sound from any Mp3 player or other audio device that uses the standard 3.5mm stereo jack. If you want more details I suggest you check out this review at macteens: "This speaker set is ridiculously small and light - let’s say, more so than a wallet. In its lightweight design, the TuneBox can be situated most anywhere you want to hear your music."