... dvr digital video recorder -H.264 realtime HD 720P DVR -USB,PTZ,Audio,Network,VGA -720p realtime record -2 HDD, ... PTZ, network, two-way audio, VGA, HDMI;2. Support mobile phone live preview via GPRS/CDMA/EDGE ... 6000GUSB BackupUSB2.0 U disk/Network downloadUSBUSB Interface 2 USB2.0 PortsPTZPTZ Control Support Preset, Patrol, ... ) * 320 (D) Weight4.5kg HD 720P DVR Digital Video Recorder