BlueRigger ZP-8151 Portable Speaker System for Iphone 4G/3GS/3G, Ipod Nano, Ipod Touch Battery or AC powered - play and charge your iPhone/iPod while listening to your favorite music Wall-mountable or will sit on a table/desk (Stand can also be positioned horizontally for video viewing) Improved acoustics for a smoother, rich experience to enjoy music Compatibility: iPhone 4/3GS/3G; iPod touch 4G/ 3G; iPod Nano/Classic 1 Year Warranty