R-Tech LVCH-SK0804S 8-Channel Surveillance System with 4 Bullet Security Cameras (Silver) 8 CH Real-time Recording and Playback H.264 Dual-Stream Video Compression 500GB HDD Included Live View & Playback Available on Internet Browser and Mobile Phones 4x 500TVL Outdoor Cameras with 3.6mm Fixed Lens and 50ft IR Range