ANNKE 8CH HD-TVI Security Camera System 1080P Lite DVR Recorder and (4) 720P 1280TVL Outdoor Fixed Dome Cameras with IP66 Weatherproof Day/Night Vision, Motion Detection & Email Alert 8-Channel 1080P lite digital video recorder with 720p indoor& outdoor cameras. Stunning 720P smooth and clear video recording, viewing and playback. Robust DVR supports extra IP camera connection. Up to 66ft/20m night vision with smart IR. IP66 weatherproof indoor&outdoor cameras. Instant motion triggered email alarm with snapshots as attachments; customizable motion detection regions; remote access on Android and iOS devices, install the app by scanning QR-code.( Note: It needs to purchase and install a HDD if you need to record footage and playback) Secure your family and wallet: High efficiency H.264+ video compression helps you triple the recording time by lowering the bitrate and occupying less bandwidth, that's to say, 1TB HDD can equal a 3TB HDD with the new technology. In that way, you no longer have to waste money getting another HDD with a larger capacity. Multiple smart detection and alarm, motion detection, video loss detection, invasion detection, crossing-line detection etc. Easy USB backup. CE&FCC certified system with qualified power adapters. S.M.A.R.T hard disk detection, detect and report hard disk failure timely; one-key recording, to start motion detection recording or continuous recording at once. Dual-stream design ensures fluent video recording and viewing.