... factory produce experience *original chips,good battery *mp3 player with expandable memory *mp3 music player Mp3 Player with expandable memory mp3 music player,no memory support expand card,2G,4G ... 30 g. Concise, delicate, fashion. 2, Support mp3,wma music format. 3, can use to be TF card reader. 4, ... caused the built-in lithium battery failure and damage. 3.Pls don't care the Rechargeable light color,4 ...