Be protected & see every detail in HD, with the Swann SWDVK444004US. It's a state of the art & expandable surveillance system with video technology equivalent to 720p HD resolution. Set & forget by recording continuously from 4 channels for 24 days-plus onto a 500GB hard drive, even longer with motion detection. Seeing is believing with Swann's 4 x 720p HD Cameras (2 Megapixel). Save time and have peace of mind by easily locating incident video, then transfer to external storage via USB or network. View live or playback video in high definition on your HDTV, LCD screen or monitor. You can connect in minutes using SwannLink Peer-to-Peer easy network connection software. Most importantly, surveillance is in the palm of your hand with live viewing on 3G/4G-enabled Smartphone & tablets including, iPhone, iPad, Android devices and more using the free SwannView Link app. Swann is the best solution to protect your Family and business.