1Safe Mdvr: Industrial grade design, more secure Rca head interface, 9 to 36V wide voltage input, overload protection, short circuit protection, reverse connection protection. 2Features: Support for license plate numbers, time, driving information and other characters overlay. The host can be turned on, off and delayed. You can add left turn, right turn, and reverse auto full screen display. 3Switch Door Recording: The switch door recording function can be added, and the video files are separately packaged during the opening process, convenient for viewing and higher efficiency. 4Wide Application: The mini Mdvr is extensively applicable to school buses, buses, tank trucks, engineering vehicles, large trucks, boats, coaches, yachts, etc. 5H264 Compression Algorithm: Adopt H264 video compression algorithm, video takes up less space on the hard disk and Long storage time, Support 128G memory card (not included). 64 Channel Mdvr: The vehicle recorder supports 4 channels of video input and 4 channels of audio input, and supports 1 composite video output and 1 audio output.