... . ( 4GB-16GB be optional ) External inserted TF card be extendable from 512MB to 16 GB. System Android 2.3 (will upgrade ... . G-Sensor All gravity induction Applications MSN, Skype, Gmail, Apps from Android Market Office Software WORD, EXCEL, POWERPOINT, PDF, TXT, etc ... , EPUB, etc Battery 3.7V/4400mA hot sell tablet pc/personal computer 8 inch with USB cable