Swann DVR4-2550 4 Channel Digital Video Recorder with Smartphone Viewing (SWDVR-42550H) Internet-ready protection for your home or business 24/7 Just add cameras to record and view up to 4 channels of high quality video simultaneously in real time Set and forget by recording continuously from 4 cameras for 120 days+ onto a massive 500GB hard drive. Remote viewing is easier than ever to set up with UPnP (Universal Plug n Play) auto network configuration Surveillance in the palm of your hand with live viewing on 3G enabled Smartphones including iPhone, iPad, Blackberry, Also works with Android, Windows Mobile 6, Symbian and more Set & forget by recording continuously from 4 cameras for 120 days+ onto a massive 500GB hard drive, even longer with motion detection Smartphones including iPhone, iPad, Blackberry, Android, Windows Mobile 6, Symbian and more