2K, Two Way Audio? Hiseeu Wireless Security Camera System, 3TB Hard Drive, 3MP 8CH Dual WiFi NVR, Mobile & PC Remote, IP66 Waterproof, Motion Alert, Plug & Play, 24/7 Motion Recording. 265+ Video Compression & 3TB Hard Drive: Compared with H. 264, second generation H. 265 is able to double data compression ratio, while improve ...