USB,TF,,LINE IN,FM,RECORD(Support To 16G) Output Power : 20wFrequency Rosponse : 100Hz-10KHz± ... .4V 1750mAHPower Adaptor : DC:12V / 500MAUSB,TF,FM,Antenna,Remote Control,LCD,Recorder,EchoMusic Tone : MP3Audio Input : USB,TF,FM,Wired MicUSB,TF up ... mic,recharger,remote controlWith a remote control : WAIST BAND RECORD USB MP3 AMPLIFIER (K7500)