JBL On Time Micro Speaker System for iPod (Black) Compatibility: iPod mini; iPod nano 1G, 2G, 3G, 4G; iPod classic 3G, 4G, 5G, 5.5G, 6G; iPod touch; iPhone 1G, 3G, 3GS Charges your iPod or iPhone, even when not connected to the computer or the system is off Proprietary JBL Phoenix and Ridge speakers provide 2 x 6 Watts of crystal-clear audio Digital alarm clock with large backlit display, battery backup--wake to AM/FM Radio, iPod, or iPhone 3.5mm auxiliary input for external audio devices