... screen display working state 3:Built-in lithium battery Mini Car SpeakerSupport USB/TF Card/FM functionUnit Price: SNR:> 85dBRated ... Card or U Disk PluggedFull Compatible with Audio file,as MP3 file. USB2.0 High speed port,Support USB HOST ... plugging Support AUX IN,connect with TV , cell phone , mp3 ipod, Iphone,Ipad,PC as Hi-fi speakerBuilt-in HD ... FCC, RoHS Warranty: 1 year 2012 new LED Mini Car Speaker