H.264 Car DVR Recorder 1.vandal-proof, waterproof, and ... 3days storage 32GB SD Card 4 Channel H.264 Car DVR Recorder AK-6104S Main Features:Industrial grade design ... and 1CH vedio output.3),Vedio compress format H.264,having 3levels image for option(CIF, ... ),In the vedio, can add date,clock,car number,speed,brake,alarm signal in real time ... powered 32GB SD Card 4 Channel H.264 Car DVR Recorder AK-6104S