1,Laser Night Vision Systerm, 2,day/night surveillance, 3mainly used for long distance night surveillance, up to 2000 meters Glopro Laser Night Vision System GLN-810408--Laser Night Vision Systerm ... of PixelsPAL795(H)× 596(V)Minimum Illumination0.001lux,F1.4Day/Night SwitchingautomaticHorizontal Resolution540TVLWhite Balanceautomatic/manualS/N Ratio50dBLenslongest focal length≥90mmMagnification≥20 ...