Q-See QC448-840-5 8-Channel Surveillance System with 500 GB Hard Drive and 8 Weatherproof Color CCD Cameras, Black Stream Live Video Directly to a remote MAC or PC, iPhone, iPad, Android, or other Supported Smartphone Running Windows Mobile Pro or Symbian on 3G Networks. Receive email alerts upon motion detection. Includes 8 CCD Cameras with 480 TV Lines of Resolution Each camera provides up to 75ft of night vision Comes with a pre-installed 500 GB Hard Drive Remote Internet monitoring (up to 20 users at the same time)