MP3 Amp speaker

My Tunes Amp is a powerful and versatile amp-style 5 Watt MP3 speaker containing a premium-grade speaker unit – so your tunes come through crystal clear and loud enough to rock a party! The three controls adjust volume, treble and bass. With USB cable to power the speaker and an audio cable that works with most MP3 players. Can also be powered by battery for times when you're far from a computer (or in the middle of a muddy field!). Alternatively, connect to your PC with the audio cable and use as a computer speaker. MP3 Amp uses 3 x AAA batteries (not included).