1.4CH,H-264 Compression 2.Support network,playback,Iphone4,3G phone,2 USB,PTZ,Audio 3.Graphical interface ... 4.CCTV DVR Features:WT-DVR1004 CCTV DVR DVR Digital Video Recorder1.8 CH,H ... -264 triplex time Professional DVR 2.Support network,playback,Iphone4,3G ... phone 3.Support 2 USB,PTZ,Audio,VGA and E-mail ...