... mini dvr This USB DVR Surveillance System (4 CHANNEL) is a great safety system for your home ... recording (Schedule recording)Audio Capture24H Recycle recording (two channel and need sound card)Multi-task FunctionalMonitoring, Recording, ... windows media player)Compression TechnologyMPEG-4Audio RecordingEnable record 2 channel audioImage AdjustmentEnable adjusts brightness, contract, hue, and saturation ...