ZOSI 4Channel 720P HD DVR CCTV Home Security System with 4X Indoor/Outdoor Color Dome Cameras NO Include Hard Disk (65ft(20m) IR Night Vision,3.6mm Lens, Smartphone& PC Easy Remote Access) H.264 4Channel 720P DVR with 4 high definition 1.0 Megapixel 1280 TVL (720P) IP66 indoor/outdoor weatherproof cameras.***No include hard disk***you need to install hard disk for record &Playback. DeVry equipped with 1080P HDMI/VGA/BNC port for multi video output, Support quick QR Code Scan - easy & quick remote access Email notification & mobile push alerts when motion detection, free ZOSI View apps for live view and playback on smartphone Support USB port back up, gives you the easiest option of backing up and transferring your video footage to a USB flash drive Two year quality , life time Tech support ! if your product stops working in the first year We will replace it.