LTS LTD2304SS-C Analog Advanced Level Compact 4 Channel DVR, Black, HDMI/VGA/BNC output up to 1920x1080, 2 CH Audio In/ 1CH Audio Out, 4 CH Realtime Playback, Embedded Linux 4 CH WD1 Realtime H.264 Pentaplex DVR HDMI/VGA/BNC output up to 1920x1080 2 CH Audio In/ 1CH Audio Out 4 CH Realtime Playback Live View on Smart Phones and Playback on iPhones