32ch hardware NVR H.264 video & G.711 audio compression Up to 5megapixels resolution recording Enable P2P Dual Stream support HDMI and VGA output up to1920x1080P resolution Smartphone application for IPhone and Android phone Audio (1ch input/1ch output), Alarm (16input/4output) Digital Zoom (Live/playback) Support 4HDD (up to 4TBx4 capacity)