Q-See QS494-5 4 Channel H.264 Smart Recording DVR with Pre-Installed 500 GB Hard Drive, Black Stream Live Video Directly to a remote MAC or PC, iPhone, iPad, or Android. Receive email alerts upon motion detection. Receive email alerts upon motion detection. Remote Internet monitoring (up to 5 users at the same time) Customize up to 4 cameras Includes Pre-installed 500GB Hard Drive