... DVR with G-Sensor 4CH in, 1CH out USB, CF card Storage ,GPS Vehicle tracking,12V,24V • H.264 video compression, Linux operation systems ... video recording;• Local storage: 32GB CF card;• Built-in 3G, GPS receiver,G-sensor;• Wide working voltage: DC 8-28V;• Wide ... ;• Motion alarm• History Playback 3G Mobile DVR, WCDMA,G-Sensor, GPS, CF card ,4CH,USB,Vehicle tracking,12V,24V