... exausted. Long time battery lifeLine-in function, Compatible with all the devices that have 3.5mm plug. ... up, wonderful Bass audio effect comes out. Applicable to MP3, MP4, Laptop, PC, MD, Mobile phone, etc ... Distortion<0.5%7.BatteryBuilt-in Li-Battery with circuit protection(300ma)8.Mains input5v/500MA ... ipod speaker,mini speaker products,loudspeaker, MP3 speaker,aluminium speaker,alumimium mini speaker