... network 3.Double SD Cards 4. H.264 compression format 3G Mobile DVRIntroduction1,Support 4CH video,CIF,HD1,D1 resolution up to ... , date, license plate number and other data in the video.3,Built-in GPS,3G wireless communication module,which achieve global positioning ... with antennaBackColor PackagingThis is the video image of 4CH 3G Mobile DVR. You can see time, date, vehicle speed and license ...