DB-712 tablet pc * Android 4.0, 1.5GHZ * 7"inch capacitive ... WAV Frequency response: 20Hz to 20000HzInterface: 1*Mini USB 2.0, 1*3.5mm earphone jack,1* ... 1.Functioning Test: Outlook, Calibrate screen, Keyboard, WIFI, Camera, all Card Slot and USB Slot, G-Sensor, Bluetooth, Microphone, ... any other special function.3. Accessory Test: Battery, USB Cable, Earphone, Charger, TF cardPayment:We accept payment ...