HD 720p dvr digital video recorder -H.264 realtime HD 720P DVR -USB,PTZ,Audio,Network,VGA -720p realtime record -2 HDD, 4TB 4 ... .264 Real-time Recording, support USB, PTZ, network, two-way audio, VGA, HDMI;2. Support mobile phone live preview via GPRS ... (W) * 55(H) * 320 (D) Weight4.5kg HD 720P DVR Digital Video Recorder