1.Function of strong night vision, able to see the appearance of humans clearly within 10m in complete darkness. 2.Double-filter switcher, no color cast in the daytime, clearer in the nighttime. 3.Unable to look up or delete the data of recording files, unless authorized. 4.Function of character superimposition, all videos and pictures will be attached with time, device ID, police ID and other information, they are unable to be edited or rearranged, providing more effective legal evidence. 5.Super-long filename, filenames of all video files include device ID, time, police ID and other information, convenient for data archiving and retrieving., Manufacturer: LLOOPK