... rotate function -MP4 Player -4G flash 7 inch Ebook Reader 4GB Colorful TFT Screen Touch screen Ebook mp4 player video player FM digital photo ... functionSpecification:Interface: mini USB2.0 (charging), headphone, SD card slotStorage memory: NAND flash Storage capacity: 4GBExternal memory: SD ... formats: WAV, MP3, WMAVideo format support: rmvb,rm,avi,vob,flv,mpeg4, etcText formats: TXT, EPUB, HTML, ...