4ch HD DVR -H.264 realtime 4ch hd dvr -USB,PTZ,Audio,Network,VGA,HDMI -4ch HD realtime recording -CMS/IE management 4 channel HD DVR Features: ... Function;4. Playback, video, network transmission, mobile browsing, and backup etc. work simultaneously;5. Access to local multi-screen ... real-time preview, settings, backup and playback video through IE; 6. Recording Resolution up to ...