... *5years factory produce experience *original chips,good battery *battery operated mp3 player *mp3 aaa battery AAA battery mp3 player battery operated mp3 player2G,4G,8G,16G for option ... OLED color display, support MP3, WMA, music files and so on; 2,FM stereo radio reception and recording, radio and pre ... 1.When you charging for the mp3 player,pls turn on the switch. 2.When you charging connect USB by ...