1:Fashion Appearance 2:Mini size,portable 3:Fit for Mp3 or any other usb interface 4:Loud voice 5:LED ... , you can connect this unit to other MP3 players. 4) Portable music system compatible with MP3, MP4, Mobile Phone, Computer, iPod,PDA, etc ... . 5) Line in function. 6) Support MP3,WMA dual-format music player that supports large-capacity(8G ...