... RAM:256M / 4G NAND Fast Flash HDD 3. Track ball navigation 4. WiFi+HDMI New! 7" Multi- ... 2.1 Tablet PC with WIFI / HDMI / Track Ball GeneralSpecificationsOperating SystemGoogle Android 2.1Model904Product TypeTablet PCSecurity/KeyboardTouch ... 's Manual1 x Stylus penAdditional FeaturesBuilt-in Speaker, Track Ball, G-sensor, HDMI, Track BallLanguagesEnglish, French, Italian, Arabic, German, Spanish, ...