Swann 4-Channel DVR4-2550 and 4x ADS-180 CMOS SWDVK-425504C Cameras View & record 4 channels of high quality video simultaneously in real time Includes 4 weather resistant, clear resolution 400TVL cameras with powerful night vision to 33ft/10m Set & forget by recording continuously from 4 cameras for 120 days+ onto a massive 500GB hard drive, even longer with motion detection Surveillance in the palm or your hand with live viewing on 3G enabled Smartphone including iPhone, iPad, Android, BlackBerry, Windows Mobile 6, Symbian OS and more*, with remote notification via email Save time & have peace of mind by easily locating incident video, then transfer to USB flash drive