Includes: 4-cameras for comprehensive monitoring & recording ability Four High Quality CCD 420TVL weatherproof cameras with IR night vision Nightvision upto 20m 250GB of storage idea for all your security footage requirements Included 17 meters of extension cable per Camera H.264 real-time high compression & supports dual stream network transmission Supports remote view with mobile phones based on Symbian S60 3rd 5th edition Windows Mobile iPhone & Blackberry A See Free iPhone App for remote viewing avaliable from Itunes Store Supports pentaplex operation live view record playback backup & network transmission Supports real-time internet remote viewing with IE browser CMS PC Software with easy to use graphical interface Download from website Smart motion detection & recording schedule Standalone Linux 2.6 operation system ADPCM audio compression Supports USB (Universal Serial Bus) mouse Supports backup & upgrade with USB (Universal Serial Bus) flash disk Supports DDNSSupports audio transmission via network Supports control of PTZ pan tilt zoom cameras via built-in RS-485 port Selectable packing time for recorded files Supports editing camera title- Supports adjusting image color Event camera pop-up function Supports VGA output max. resolution 1920 x 1200 Alarm modes Motion Detection Video loss HDD full HDD loss Email alert function- With free-drag digital zoom functions for live viewing Supports up to 1 x 1TB SATA HDD