H.264 HD DVR -H.264 realtime HD DVR -USB,PTZ,Audio,Network,VGA -SATA HDD ... 2TB -720p realtime recording 4 channel HD DVR Features: 1. H.264 Real-time Recording, support USB, PTZ, network, two-way audio ... %Working Temperature 0°C ~ 50°CDimension (mm) 405(W) * 55(H) * 320 (D) Weight4.0kg