Two Way Audio & 8 Channel System: This is 8Channel Dual WiFi 3MP Network Video Recorder + 4Pcs 2K/3MP(2304 by 1296) IP66 Waterproof Two-Way Audio Security Camera System. H.265+ Video Compression & 1TB Hard Drive: Reducing the Network Bandwidth and Save up to 50% Video Storage Space.1Tb Hard Drive Pre-installed support 24 hours More than 45 days reliable video recording. Remote Viewing on the other side of the earth: Hiseeu has powerful global Internet services. Download free App Eseecloud from Google Play or Apple App Store. Alerts & Video Playback: Wireless IP Camera System Supports Sync-playback, Video Backup and Video detection. NVR and Cameras only need to connect 12V DC adapter. Legal Provisions on Recording: Hiseeu sells camera systems in more than 50 countries and regions around the world.