Perfect combination of classic and modern performance, praised as masterwork of audio boxes. New mini aluminum vibration film loud speaker provides your excellent stereo sound. Suitable for MP3, MP4, CD, DVD, GPS, PSP, mobile phone, notebook computer, U-disk, TF card and SD card more. Built-in a power charge station, which can charge for your iPhone 3G/3GS/4G/iPod anywhere and anytime. Specially designed for iPhone 3G/3GS/4G/iPod. Built-in rechargeable lithium battery. Support volume control. Support USB port and Micro SDcard slot. Come with a base stand for supporting iPhone 3G/3GS/4G/iPod.