GWSecurity 4CH400WHD 4 Channel DVR + 4 x 2592TVL (1920P) Vari-Focal Zoom 147 feet IR Outdoor/Indoor Security Camera System with Pre-Installed 1TB Hard Drive Full 960H Realtime High End 4 Channel DVR with (4) 2592TVL 2.8~12mm Varifocal Manual Zoom Cameras Support mobile surveillance by phones with Andriod, Balckberry, Symbian, and iPhone ,HDMI & VGA Support IE browser to remote view and Full 960H & HDMI resolution 2.8~12mm Manual Zoom Varifocal Lens which allow you to adjust the angle of View, up to 147 feet Pre-installed 1TB Hard Drive with 1 Year Warranty and Free Life Time Tech Support From U.S.A.