... Control InputUSB,HOST,Support MMC,SD,MiniSD card,LINE-IN holePower inUSB,DC power supply.FormatMP3,layer1-3Stereo AudioBASS , CLASSIC, ROCK, JAZSSButtonPLAY ... , LR stero speaker:4Ω,3WBatteryli-ion 1000MAFM RadioFM board built-in.Electrical ParametersMAX Power Dissipation900MAMINI Power Dissipation300MAFrenquency response range20HZ---20KHZSNRS/N ...