... .264 realtime network HD DVR -USB,PTZ,Audio,Network,VGA,HDMI -SATA HDD up to ... 2TB -Up to 720P resolution 4 channel HD DVR Features: 1. H.264 Real-time Recording, support USB, PTZ ... /CDMA/EDGE/3G/WIFI net; 3. Dual-core CPU; Steady System Function;4. Playback, video, network transmission, mobile browsing, and backup ...