7 inch cheapest Tablet PC with Google Android 2.2 OS support external and built in 3G CPU: VIA8650, 800Mhz            OS: Google Android OS 2.2RAM: 256MB DDR2 Storage: 2GB (4GB optional)  Display: 7inch 16:9 widescreen 800X480 high-brightness TFT LCDTouch screen, Sliding menu, Functional icon draggingOrientation Sensor: automatic steering display screen camera: 0.3M pixels (optional)Network: LAN: 802.11b/g/n Wi-Fi CERTIFIED® network connection               WiFi: 802.11 b/g/n               External 3G dongle: WCDMA:Huawei E220/ E230/ E160X/ E169G/ E1750, Alcatel X060S/ X200               Support built in 3G also.Sound Effect: Stereo speakers device, Built-in microphone.Support High-speed Micro SD card (maximum: 32GB)24 pin USB switch interface X 1 Battery: 1800MAH---1.5 hours working, or 2900Mah---3 hours workingDesktop: Android, wallpaper changeableE-book functionOffice word processing with Word, Excel, PPT, PDF.Web browsing: Google chome-lite Browser UCWEB Browser E-mail, Game,  MSN, SKYPE, QQ, GTALKNote Paper, desktop tools, clock,  Desktop: Port: Button:    Adapter: