ANNKE CCTV Camera Systems 8 Channel 1080P Lite H.264+ DVR and 8&times;720P Weatherproof HD-TVI Bullet Cameras, 1TB Surveillance Hard Drive, Email Alert with Snapshots Advanced H.264+ compressionEnable H.264+, recording continuously for 600 hours with a 1TB HDD on normal conditions, however, H.264 takes 4TB HDD to achieve 600-hour long video. With the provided compression method, you have effectively saved 70$ on storage. Customize motion detectionMark out the relevant areas for motion detection to minimize false alerts. Send email alerts with snapshots and APP pushes of suspicious events immediately. Dedicated surveillance HDDProvide with 1TB HDD to keep record data 24/7 from multiple camera streams whilst normal desktop HDD couldn't withstand always-on operational demands. Quick remote accessThe camera can be accessed and controlled remotely to your whole surveillance via the APP on your mobile devices. Review and watch live videos from every corner of the world. Worry-free warrantyEasy-to-reach lifetime telephone and email support, 2-year warranty and 60-day money back guarantee.