Best selling 7 inch E-book reader with cheap price and full functions Solution:RockChip 2738 size:205*133*11.8 mmResolution: 800*480Video format:MKV,AVI,RM,RMVB,VOB,DAT,MP4,FLV,3GPSupport 720P HD videoPhoto format: JPG, JPEG,BMPMusic format:MP3,WMA,OGG,FLAC,WAV,AAC,APEInternal memory:4GB NAND Flash, support TF card (max.16GB)battery:Built-in polymer Lithium battery 3.7V/3200mAhLanguage:Total support 18 countries' languageSupport:picture + music ,Support Sound Record functionCalendar & time:Support time/calendar setup & adjus. Showing synchronouslySupport:auto-turn off (3/5/10/15/20 min.) and Sleep shutdown setupE-book format:TXT,FB2, PDF,PDB,EPUB,SKT,HTMLSupport:History Skip page from SaveMark/ LoadMark/ DelMark/ Page Jump/ Set Color/Code Type/ Zoom in/outOther functions: TTS readingAccessories:USB cable, user manual, AC power adapter