1. 4ch support Full D1 real-time compression with H.264 Compression;
2. Support Multi-Channel Playback Simultaneously;
3. Support Multiplex Operation:Network, View,Recording,playback,backup running 
 at the same;
4. Support 1 sata HDD, Up to 2 Terebytes;
5. Support Removable HDD, as Usb flash,USB DVD Writer;
6. Support 3G Mobile Phone RemoteView, Cell phone OS Including:Symbian S60V
    Iphone, Blackberry,Android,Windows CE;
7. Support Multi-Language,Spanish,English,Russian,Franch,Polish, Portuguese etc.