The SYSPRO-8P1606A Video Security System comes with 8 high resolution professional cameras which may be used indoors or outdoors (with optional outdoor housing). This complete system is equipped with every cable and connector needed to complete your installation. The DVR has many advanced features including motion detection and remote internet viewing from Internet Explorer, MAC Safari, iPhone, Blackberry, Andriod & more. It also comes furnished with a 500 GB hard drive for video storage. The cameras are our Sony CCD High Resolution Professional Cameras with 680 lines of resolution, and we furnish each one with a 3.5-8mm varifocal lens (Multiple Lens Options Available). The varifocal lens allows the installer to adjust the lens to the proper angle for each camera view.  Lens upgrades available.