Q-See QC40108-436-5 10-Inch Observation 8 Channel H.264 DVR 520 High Resolution MAC OS Compatible Day and Night Cameras with 500 GB HD 10-inch LCD Monitor allowing you to monitor your cameras without the need for additional video screen. This system includes 4, easy-to-install, weatherproof cameras, each capable of up to 100 feet of night vision and 520 lines of video resolution. Remote monitoring allows you manage this surveillance system 24/7 via the internet using a PC, MAC or a supported 3G or 4G smart phone. Record and store video footage on the pre-Installed 500 Gigabyte SATA A/V-rated hard drive Select from 3 different viewing modes: Single Camera, 4 or 8 Camera, or Timed Auto-Sequence.