This is a 4 Channel DVR Card & 4 Wired CCTV CCD Cameras Security System. Including 4 channel real time digital surveillance recorder DVR card and 4Pcs 1/3 inch Sony chip, 480TV lines, outdoor dome weatherproof and dustproof, security CCTV wired color CCD camera, with built-in 6mm lens, 0.5 Lux minimum illumination and AC / DC adapter and 4Pcs power / video all in one cable. With it, you will never let any single memorable scene sneak.