Q-See QR414-320 4-Channel H.264 Real-Time Surveillance DVR Pre-Installed 320 GB Hard Drive Advanced H.264 Video Compression CIF Real-Time Recording (30FPS per channel x 4 cameras = 120FPS Total) / D1 Recording Option (7.5FPS per channel x 4 cameras = 30FPS Total) Stream Live Video Directly to a remote PC, iPhone, iPad, Blackberry Curve 8900, Bold 90009700 only, and other Supported Smartphone Running Windows Mobile Pro or Symbian on 3G Networks. Trigger Email Alerts on Motion Detection Events Backup important video from the DVR to a PC or Flash Drive Pre-Installed 320GB Hard Drive