The G2K Day/Night camera uses a military 3rd Generation night vision tube from ITT industries.  When activated, the camera switches between day and night modes depending on lighting conditions.  The system will produce a high-resolution color picture during daylight hours or a high-resolution, light-intensified black & white picture at night.  If a bright light source is observed within the field of view at night, the camera automatically switches to day mode in order to protect the Third Gen Tube.  No other system offers nighttime video recording like this!