... FiSupports FMSupport 3G (module is optional)Built-in double speakers Built-in NAND flash 128MBBuilt-in motion sensorSupports file format: TXT, HTML ... , PB2, PDF, PDB, EPUB,CHMSupports edit, zoom in/out, dictionary and notepadSupports image format: JPG, BMP, PNG, ... ,800mAh lithium battery supports 15 days standby timeAccessories:E-reader x 1pcEarphone x 1pcAdapter x 1pcLithium battery x 1pcUSB ...