* 3G wireless CAR DVR * HD 720P ,H.264 * D1 Recording dvr * ... safety on vehicle. It uses embedded processor and embedded operating system, combined with H.264 video / audio compression / decompression, GPS, ... built-in G-sensor for auto vehicle car DVR* 3G wireless on WCDMA, CDMA2000, TD-CDM,GPRS, functiondual SD card ... quantity)welcome OEM and ODM. dual SD card 3G wireless H.264 4ch car DVR (ED-2103)