portable dvr ,mini dvr 4 channel USB DVR/1 channel audio ... video loss, and HDD space shortage. 5. Support schedule recording mode, recycling recording method available. 6. MPEG4 video compression format. 5 level ... FPS TogetherRecording Mode24H Recycle recordingAudio Capture24H Recycle recordingMulti-task FunctionalMonitoring, Recording, Motion detection, and Remote transmission are all-function at the ...