... NAND Flash, can use external 250GB Portable HDD &16GB SD Card (optional: 8GB / 16GB MOQ 10PCS )- Support External 3G Modems: WCDMA ... *1, HDIM Port*1, DC port, 3.5mm Headphone Card Port: SD/MMC card- Battery: 2000MAH ( working time: 2.5 to 3 hours ... :1. Functioning inspect: Appearance, screen, Keyboard, Wifi, WLAN, Camera, all Card Slot and USB Slot, G-Sensor, Bluetooth, Microphone, Speaker, GPS ...