... 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,8G,16G ... We all use the best HY or MG original flash .We also offer professional technology and after-sale servies ... ?A:Yep, We use good original flash,good battery for mp3 mp4 products.Ensure that it more stability ...