... 2CH of CIF . Wireless transmission: GPRS, EDGE, CDMA, 3G optional . Default 3G type . Built-in GPS Module,G-SENSOR Module. Support ... .Wireless transmission: GPRS, EDGE, CDMA, WIFI, 3G (EVDO) optional . Default 3G type .Built-in GPS Module.Support 1CH audio ... GPSYes, built-in GPS moduleWireless TransmissionGPRS, EDGE, CDMA, WIFI, 3G (EVDO) optional. G-sensor, Gyro-sensor supported .BackupSD CardSupport ...