LaView 4 HD 720P Camera Security System,  4 Channel 720P HD-TVI DVR w/500GB HDD and 4 720P HD Black Bullet Surveillance Cameras Kit Guard your home or business with this 4-Channel HD DVR, which delivers crisp 720p real-time recording AND comes with 1 BONUS CHANNEL that accommodates an IP camera with up to 1080p recording and playback Keep reliable watch day and night with four top-quality bullet cameras, equipped with Smart IR/DNR-enhanced image clarity and crystal night vision up to 65 ft (nearly the length of a tennis court!) DVR comes fully equipped with pre-installed 500GB hard drive and is capable of being upgraded to a 6TB hard drive LaView Mobile, our free downloadable app, enables live view and playback on iOS and Android devices remotely with a simple QR code scan Maintain peace of mind with our full 1-year warranty and lifetime tech support