... 2.built in memory 3.support micro sd card 4.function:music,video,ebook,FM,etc. mp4 ... ebook,FM,etc. screen mp4 player with TF card slot Feature Features and Desriptions:screen mp4 player ... with TF card slot Unit size: 86.3x40.2x10.5mm - ... charge battery via USB connecting to a working computer Accessories: gift box,USB Cable, Manual, earphone Order detail ...