... can click to read, repeat read, the game MP3 functionses, story function, children song function, record sound, playback function, favor TF- ... quality optics identifies machine, backing USB2.0 top speed download, favoring MP3 format music and story play.The video animation Smart ... optics identifies a machine, backing USB2.0 top speed download backing MP3 format music and play story. Remark:Our product ...