HD 720p dvr digital video recorder -H.264 realtime HD 720P DVR -USB,PTZ,Audio,Network,VGA - ... record -2 HDD, 4TB 4 channel HD DVR Features: 1. H.264 Real-time Recording, support USB, PTZ, network, two-way ... %Working Temperature 0°C ~ 50°CDimension (mm) 405(W) * 55(H) * 320 (D) Weight4.5kg HD 720P DVR Digital Video Recorder