... Russian, Portuguese… Video and audio real time recording and playback at the same time.Support HD VGA output, ... playback, network can be operated at the same time.Specification: ModelGRT-D6004MHGRT-D6008MHOperation SystemEmbedded Linux Operation ... CompressionADPCMRecording ModeManual, Timing, Alarm, Motion detectionSearch ModeBy time, event, channel, logBackup ModeNetwork download, USB backupVideo ...