... with USB/TF portLong press M key, start the machine,the machine can play TF/U Disk.in FM ... state, long press “ PLAY/SCAN “key, the machine will search the radio channels automatically ,in music or FM State ... “EQ” have 4 different music effect, “REP” repeat the musicConnect the earphone.5V is charger port, “AUX” is audio port ... PC and other audio device.Detail Picture: 2012 New Model Radio Speaker RX-898