... .4camera input simultaneously 3.display modes:4 images,3images,2images 4.factory warranty This system is suitable for buses,cars,trucks, ... vehicles,achieving,comprehensive prespective. System is hightly integrated with industrial grade chip,shockproof and dustproof.Shell with high quality galvaniaed materials and ... 11. Lens Angle: 120 Degrees car,truck,bus parking system,7inch monitor with 4 cameras