Remote Control Mini SPY Car Vehicle Realtime Tracker For GSM GPRS GPS System Tracking Device TK103B NoteU 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.