... frequencyRAM ChipDDRII-256M,400MHz 32bit memoryScreen 7-inch TFT colorful touch screenResolution Ratio800X480USB InterfaceMin USB 2.0, OTG interconnectionButtonThree buttons(volume ... , 50% paid off before delivery. Functional Characteristics:7-inch touch screen, supports full screen touching.Supports capacitive handle input method, Pinyin, handwriting,etc ...