... mp3 player1,OLED color display, support MP3, WMA, music files and so on; 2,FM stereo radio reception ... 3-5 hours Weight 18g Memory suport TF expand card(1GB,2G,4G,8G,16G )Package box,earphone, ... the OFF state. Complete shutdownthe steps for useThe TF card is inserted into the machine, copyed the song ... with a data cable or card reader , then switch the power to the ON position ...