Swann 720P HD Bullet Security Camera, Pro-T850, White (Compatible with Swann 4500 Series) - SWPRO-T850CAM-US A state of the art surveillance camera with video technology equivalent to 720p Seeing is believing with 720p HD Cameras (1 Megapixel, equivalent to 1000TVL) These cameras can only be used in combination with Swann's Professional HD Digital Video Recorders including DVR4-4500, DVR8-4500 or DVR16-4500 for cutting-edge surveillance in HD