1.8-Channel Standalone DVR 2.H.264 Algorthm,Pentaplex ... 3.Support Internal CD / DVD-RW 4.USB Backup,SATA port 5.IN:16Ch Video 8-Channel ... , e-mail & ftp uploadAlarm Input4/16/16 channel, programmable, ground, manual open/closedTrigger recording, PTZ ... Motion Detection & exact search (accurate to second)Playback2 channel playback simultaneously, pause, stop, rewind, fast play ...