Digital Peripheral Solutions Q-See QC444-411-5 4 Channel H.264 DVR with 4 Day and Night Cameras, MAC OS Compatibility, and 500GB Hard Drive MAC OS Compatibility Features PSS Software that allows remote viewing on up to 32 cameras at a time from one location Watch live video or playback video over the Internet from anywhere in the world. Includes 4 Indoor/Outdoor Cameras that provide up to 40ft. Of Night Vision per Camera Pre-Installed 500GB Hard Drive; DVR Supports up to 4 Security Cameras You also have the option to remotely monitor from your iPhone, iPad, Blackberry, or other Supported 3G Smartphone Watch live video or playback video over the Internet from anywhere in the world. You also have the option to remotely monitor from your iPhone, iPad, Blackberry, or other Supported 3G Smartphone