9 inch Split Screen Monitor: Our 9-inch monitor with 1024*600 pixels features with 4 Split Screen, allows you see 4 cameras at the same time and provides more details, larger than the common 7-inch screen on the market. 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 become your driving evidence if necessary. Also has mirroring function and split screen setting Excellent Night Vision & 4 Split: Reversing camera with infrared lights and multi-layer glass lens to get clear images in the dark, 4 split screens can help us capture more details of the road to avoid blind spots, making our driving Waterproof: Backup camera adopts glue-filled technology with professional waterproof shockproof high and low temperature resistance, making it suitable for complex working scenes Flexible Vehicle Adaptability: Voltage range from 12-24V DC to accommodate large vehicles such as buses/semi-trailers/box /trailers/buses/caravans/campers/the 5th /motor homes Color: Black Material: plastic Package Contents: 1 x Car Monitor 4 x Camera Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.