This Mini speaker is the combination of classic and modern with metal shell. It adopts micro aluminum rouse membrane for high quality, clear, and pure sound effect. Compatible with MP3, MP4, DVD, iPod, PSP, Notebook, U-disk, and Micro SD, namely it is also a card reader for music. Also, it comes with FM, and display the FM frequency on the screen. Moreover, it is rechargeable. http://www.chinabuye.com/mini-rechargeable-speaker-blue-with-fm-for-u-disk-micro-sd-mp3-notebook