Specificationmini multimedia speaker with USB/SD card reader: 1.3.5mm Audio cable 2.USB ... FM radio, earphone function Features: multimedia speaker with USB/SD card reader can link to iPad, MP3, MP4, Notebook, CD, ... fidelity5.Build-in flash memory(optional),can storage large quantity music and data6.Full function All in One port design, ... as peripheral speaker. multimedia speaker with USB/SD card reader