Swann SWNVK-873008 NVR8-7300 8 Channel Network Video Recorder & 8 x NHD-815 3MP Cameras (White) Swanns network video recording security system with beyond 1080p high definition live viewing & playback in real-time (30 fps per channel) State-of-the-art digital imaging technology for 9 x the picture sharpness of traditional security systems including analog D1. Computer Operating System: Windows, Mac OS; Internet Viewing: SwannView Link; Handheld Device Supported: iOS, Android, 3G/4G Smartphones & Tablets 8 x security cameras generating super high definition 3 megapixels (50% more than 1080p) video with IR cut filters for powerful night vision to 100ft / 30m & a weather-resistant rating of IP66 for indoor & outdoor use. Each camera has a built-in microphone Set & forget by recording continuously from 8 channels for 24 days+ onto a 2TB hard drive (expandable to 6TB ) or even longer with motion detection~ Security in the palm of your hand with live viewing on your Smartphone or tablet including iOS (iPhone, iPad) & Android devices using the free Swann View Link app