Q-See 4 Channel Real-Time DVR Security Surveillance System with 4 Cameras, 450TVL Res, 65ft Night Vision - 500GB Pre-Installed HDD (model QT5140-4A6-5) 4 Channel Real-Time DVR with Real-Time D1 Resolution on all Channels Four weatherproof cameras (for indoor and outdoor use) with 450TV Lines of Resolution 65 feet of Night Vision; HDMI Port for Hi-Res Viewing Compatible with Mac and PC: Windows XP, Vista, 7 & 8, Mac OS X 10.7 & 10.8 Package Includes: (4) Cameras with 3-Axis Mounting Stands (1) Power Supply for DVR (1) Power Supply for Cameras (1) 4-way Power Splitter for Cameras (4) 60 Ft. Camera Cables (1) Remote Control (1) USB Mouse (1) HDMI Cable (1) RJ-45 Cat5 Network Cable (1) CD with Manual & Software