LYL TK103A Vehicle Car GPS/GSM/GPRS/SMS Tracker, Real-time, Google Map, Phone, WEB 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 GPS Accuracy: 5m; Voice Surveillance; Alarm Function Modes switch between "track" & "monitor";Check the vehicle state.