Specificationmini multimedia speaker with USB/SD card reader: 1.3.5mm Audio ... radio, earphone function Features: multimedia speaker with USB/SD card reader can link to iPad, MP3, MP4, Notebook ... ),can storage large quantity music and data6.Full function All in One port design, All ... Full function LED pilot lamp, build-in mp3,mp4,laptop,mobilephone as peripheral speaker. multimedia speaker with USB/SD card ...