This is a 8 channels H.264 format DVR system which can support up to 8 BNC Video input. and 8 RCA Audio input. - Channel 1 & 2 Record & Playback resolution : D1 (704X480pixels) resolution 30fps each channel- Channel 3 to 8 Record & Playback resolution : CIF (352X240pixels) resolution 30fps each channelThis package comes with 4 indoor dome and 4 indoor/outdoor bullet color day night camera. All the data will save to the Hard drive first and then you can back it up to USB flash drive. It comes with 10/100 Ethernet ports that you can connect DVR to the internet and you can live view, playback the image anywhere by using Internet Explorer 6 or above. Build-in CMS function can help you monitoring different location"s DVR at the same time. Utilize graphic user interface, intuitive and easy-to-user for navigation OSD menu, high efficient for rapid response to the menu, easy to identify and set up for user. True Sextuple operation simultaneously Non-interference: Preview, recording, playback, backup and network operation at the same time. System auto recovery to power after power reconnected,and Return to the pre-power-down state. 500GB Hard Drive is pre-installed