... DVR, 4 channel, GPS, 3G,WIFI 2.H.264 ,VOICE Talking 3.Sending alarm sms to ... Built-in GPS, WIFI, G sensor, Gyro sensor optional.2 SD Card slots optional,VOIPl Built-in wireless module like 3G (EVDO, WCDMA ... induce the vehicle X, Y, Z axis3G,WIFI Wireless transmissionBuilt-in wireless module optional. Such as 3G EVDO, HSPA, HSDPA, WCDMA…GPRS, EDGEPlaybackSystemVideo SearchSearch ...