4CH H.264 dvr with 3g/gps/gprs/gsm 1.H.264 format 2.1~4CH video input 3. ... ,HD1,D1 resolution 4CH H.264 dvr with 3g/gps/gprs/gsmIntroduction1,Support 4CH video,CIF,HD1,D1 resolution up to ... other data in the video.3,Built-in GPS,3G wireless communication module,which achieve global positioning and real-time transmission ... &protection Industry Association 4CH H.264 dvr with 3g/gps/gprs/gsm