... Camera BlankSupportAlarm Input4 channel8 channel16 channelRelay Output6 channelPlayback & BackupPlayback Channel1/2/4/AllSearch ModeTime/Date, Alarm, MD & Exact search (accurate ... camera, Previous camera, Full screen, Repeat, Shuffle, Backup selection, Digital zoomBackup ModeFlash drive/ USB HDD/ USB CD&DVD-RW / eSATA ... ×285mm×50mm(W×D×H)Weight3.0KG(without HDD) digital video recorder camera dvr