KAVASS 1TB HDD H.264 HDMI 4CH Channel Security NVR Kit with 4 Indoor / Outdoor 720P High Definition IR Day Night Vision HD Wi-fi Wireless Surveillance IP Cameras Day night vision,View anytime, anywhere via internet 1TB Hard Drive Preinstalled 4 Channel NVR,4PCS 720P Wireless IP Network Cameras 720P HD Definition IPhone, iPad, Android, and Blackberry Viewing via Free App