... : JPEG, BMP, PNG, GIF8. E-book reading, supporting bookmark function; 9. Picture view: Slide player, zoom in/out, supporting background music ... : 7 keys (left, right, back, enter, vol+, vol-, power)14. Card slot: TF Card slot, the largest support 16GB15. USB interface: USB ... computer copy files16. OS: Xuezhiyou (similar with Linux)China learning machine: 4.3 inch Touch Screen language dictionary(S80)