Features: Non-porous design, convenient mini hangings, hand-held DV. Built-in four night vision lights capture more details and present high definition images in wider range during night. When the capacity of the memory card is less than 400MB, the system will automatically cover the previous video. The file can not be recovered after it is covered. Do not support the function of recording video when charging. When detecting low battery, the camera will automatically save the recorded video, and then turn off after the blue indicator has flashed for 10 times. When charging, the red and blue indicators turn on. After charging, the red indicator turns off. Under on/off state, the data all can be read after connecting the device with computer.