... ,USB-flash FM radio,1.5inch speaker exterbal battery,500mAh/DC 5V 3.5mm audio line mini speaker:220* ... Mobile phone,etc2,it has the function of FM radio.the storage can be over 20 channels3, ... other supplier. product feature Part number:SG-339 mini portable multimedia speakerinterface:USB,SD card,3.5mm stereo ... products covers from Mp3 player/Mp4 players,to mini speakers,etc.We are a powerful manufacturer ...