Amcrest 960H 4CH w/ 500GB HD Security Camera DVR (Cameras Not Included) Supports Up to 4 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). 24 IR LEDs that automatically activate when they detect low lighting conditions.They can see up to 20 meters (about 65 feet) away, make sure to take advantage of Motion Detection and Scheduled recordings in conjunction with Night Vision to have complete control over the protection of all that you care about. Pre-Installed 500ZGB Hard Drive (expandable up to 4 TB) 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