1.high quality mini speaker support SD/MMC/USB 2.Dual type battery supply 3.Line in support mp3,mp4,cell phone,dvd,Laptop SU-02 high quality mini speaker 6watt 5V with USB/SDDescription:1.This is a high quality mini speaker with USB/SD/MMC jack,can read MP3 music format automaticly2.Support all audio device, conect 3.5mm stereo audio cable between mini speaker socket "Line in" and other device, ...