Video channel:4ch,120fps/card Audio channel:4ch Comperssion:H.264 hardware;high clear video quality,D1,80-340M/h/ch Software:Use Kingnow/OEM software Other features: 1. Powerful network function 2. Frames controllable 3. Support PTZ control from alarm card. 4. Super remote control function 5. OS: Win2k,WinXP