... never be hang up. With the unique black box technology, can monitor the whole run process of the equipment, ... playback simultaneously,Pause,stop,rewind,fast play,slow play,next file,previous file,repeat,shuffle,backup selectionSearch ModeTime/Date ... ch ; Audio: 691.2M/day/channelHDD ManagementHard disk hibernation technology,HDD faulty alarm & Raid(Redundancy)Backup ModeNetwork download/Flash ...