1.laptop speaker compatible with mp3, mobile, iphone,ipod 2. SD/MMC USB speaker 3.rechargeable high capacity li-battery 1.laptop speaker compatible with mp3, mobile, iphone,ipod2. SD/MMC USB speaker3.rechargeable high capacity li-battery3. factory price4.rechargeable high capacity battery Features 1. Support SD/MMC card and USB, reading MP3 format files2. Built-in FM radio function3. With 3.5mm ...