Swann HD (1280 x 720) Security System, 8 Channel DVR with 4 x High Definition 1MP Pro-A850 Weatherproof Aluminum Surveillance Cameras, Motion Detection day/night, HDMI & VGA output, Smartphone Viewing (SWDVK-844004) A state of the art & expandable surveillance system with video technology equivalent to 720p HD resolution Set & forget by recording continuously from 8 channels for 30 days+ onto a 1TB hard drive, even longer with motion detection Seeing is believing with 4 x 720p HD Cameras (1 Megapixel) Expand by adding 4 Swann PRO-AXXX cameras of your choice for full 8 channel monitoring^ Save time & have peace of mind by easily locating incident video, then transfer to external storage via USB or network