... Voltage: 5v Support:TFcard , Mobile card,mp3,wma player FM radio More Colors available New design mini digital speaker/stereo/sound ... only the tone is perfect, but also it is easy portable The Battery:Li-ion 3.7v,600MAH is in product ... receive CD,DVD,MP3,MP4,MP5, computer stereo connectedWith FM radio (FM87.5—108.0MHZ ) Key functions that: Pls see instruction1 ...