... 4 ways video 2 ways audio, H.264 compression DVR Card 3.Excellent price,3year warranty 4 ways video ... 2 ways audio, H.264 compression. 1,Clear image : soft color ,good reducing , ... than that of the 7130series and the similar video card in the market 2,Stable performance: independent mature ... return more benefit for customers. 2013hot sale Surveilance 4Channel cctv DVR Card