Larger 7 inch Split Screen Monitor: with 1920x1080 pixels features with 4 Split Screen, allows you see 4 cameras at the same time and provides more details. It is more suitable for the large vehicles as: 5th Wheel Trailer/Tractor/RV/Truck/Bus/Semi-Trailer/Box Truck, etc Built-in DVR System: Supports 4 cameras for simultaneous recording and loop recording, which will become your driving evidence if necessary. Also has mirroring function/formatting/split screen setting. Excellent Night Vision: The reversing camera with infrared lights and multi-layer glass lens provides clear images even at night, and the 4 split screens can capture more details of the surrounding road, avoiding blind spots and ensuring our driving safety. IP69K Waterproof: Persistent metal bracket and camera with built-in upgrade chip meet IP69 waterproof standard, with professional waterproof shockproof high and low temperature resistance, making it suitable for various complex working scenarios. Flexible