mini speaker 1.mobile,mp3,mp4,PC,IPOD and other audio speaker 2.one year warranty 3.fashionable design 4.different colors ... to charge or recharge this speaker system. 2. With SD/MMC, U disc reader (Maximum support 2G), MP3 format music can be ... , you need to take out SD/MCC card, then speaker can read MP3 music file from U Disc. 4."Volume-/ Backward, long ...