GW Security VD16CH16C728WD 16 Channel Indoor Dome Surveillance Security Camera System, 16 X 1/3 Inches Sony CCD 700TVL 2.8-12mm Varifocal Lens Camera (White) Full 960H Real-time 16 Channel DVR with (16) 700TV Line 2.8~12mm Varifocal Manual Zoom Indoor Cameras Support mobile surveillance by phones with Android, Blackberry, WinCE, Symbian, and iPhone Support IE browser to remote view and Full 960H & HDMI resolution Built in 2.8~12mm Manual Zoom Varifocal Lens which allow you to adjust the angle of View Pre-installed 2TB Hard Drive with 1 Year Warranty and Free Life Time Tech Support From U.S.A.