... car speakers 1:Support USB/TF Card/FM function 2:Built-in LED Display,Digital screen ... Built-in lithium batte Mini Car SpeakerSupport USB/TF Card/FM functionUnit Price: SNR:> 85dBRated Power:3W* 2Price ... stateBuilt-in Audio decoder,Automatic playing once TF Card or U Disk PluggedFull Compatible with Audio file ... USB HOST,hot-plugging Support AUX IN,connect with TV , cell phone , mp3 ipod, Iphone,Ipad,PC ...