Functionally, Wood Speaker FM HY-A13 can directly play music files in SD card, U-disk, namely it is also a card reader. It makes you enjoy mobile music from your mobile, supporting MP3 / MP4 / Notebook / PC. What's more, FM supported enables you to enjoy radio programs at your spare time. http://www.chinabuye.com/wood-speaker-fm-hy-a13-for-sd-u-disk-mp3-pc-phone