Swann SWDVR-43200H 4200 4-Channel 960H DVR (Black) Just add cameras to view & record 4 video streams simultaneously Set & forget by recording continuously from 4 channels for 30 days+ onto a 500GB hard drive, even longer with motion detection for extra capacity connect external hard drive to eSATA port Save time & have peace of mind by easily locating incident video, then transfer to external storage via USB or network Surveillance in the palm of your hand with live viewing on 3G/4G-enabled Smartphone & tablets including, iPhone, iPad, Android devices, BlackBerry devices and more* using the free Swann View app Just add cameras to view & record 4 video streams simultaneously^ Set & forget by recording continuously from 4 channels for 30 days+ onto a 500GB hard drive, even longer with motion detection for extra capacity connect external hard drive to eSATA port^ Save time & have peace of mind by easily locating incident video, then transfer to external storage via USB or network^ Surveillance in the palm of your hand with live viewing on 3G/4G-enabled Smartphone & tablets including, iPhone, iPad, Android devices, BlackBerry devices and more* using the free SwannView app