The Memorex Universal Charging Speaker is the perfect speaker for at home or on the go. With superior quality full stereo sound and the universal lin-in connection, you can listen to your favorite music from any digital device. Plug in a digital music device - whether it's an iPhone®, your friend's Android, or any MP3 player, they'll all work with this speaker. Better yet, thanks to the built-in USB charging port, your device battery won't lose power while you listen. The Universal Charging Speaker is portable on 4 AA batteries so you can take it anywhere. Whether its to the backward for a barbecue, or to your friend's house for a dance party, the music never ends - wherever you go!