Note：U need a SIM card to make this item work.With Remote Control; with SD card slot (SD card not included); Super Guard Advanced GPS Vehicle Security Device;No Contract, No Activation Fee, No Software use Fee * Band: 850/900/1800/1900Mhz; Network: GSM/GPRS * GPS Accuracy: 5m; Voice Surveillance; Alarm Function * Real Time tracking by internet (googlemap or software map) and GSM * Modes switch between "track" & "monitor";Check the vehicle state.