Amcrest 960H 16CH Video Security DVR Digital Recorder, Pre-Installed 1TB HDD, Cameras NOT Included, 16-Channel DVR Security Camera System (AMDV960H16) Supports Up to 16 High Resolution 800+ TVL Cameras (not included) for Excellent Video Quality and Clarity. View and Record in Widescreen with Remote Viewing on iPhone, iPad, and Android devices (with included Amcrest Link app). Pre-Installed 1TB Hard Drive (expandable up to 12TB) for 6 Days of Continuous Recording at Highest Resolution. Longer Recording Times Up to 30+ Days Available with Use of Motion Detection and/or Lower Resolution Settings. Cameras, Camera Power Supplies and Camera Video Cables are Not Included and are Sold Separately.