GW Security HD-SDI High Definition 8 Channel DVR for Security Camera System 1920&times;1080P@15fps(each ch) record resolution, support E-SATA. 4ch sensor input, 1 channel alarm out. iPhone, Android Viewing. HDMI & VGA. Utilize graphic user interface. Preview, recording, playback, and network live, backup, playback, USB2.0 Backup, PTZ Control HD-SDI High Definition 8 Channel DVR - 19201080P HD Pixel Support mobile surveillance by phones with Andriod, Balckberry, WinCE, Symbian, and iPhone ,HDMI & VGA,E-SATA 8ch sensor input, 1 channel alarm out Support IE browser to remote view 1 Year Warranty. Free Life Time Tech Support From U.S.A.