... SMS. 3.SOS alert, Monitor 4.Movement alert Global accurate and real time vehicle gps tracker BriefBased on the GPS satellites ... and GSM(850/900/1800/1900MHZ),and by message,internet or PDA, it can ... precisely, Be widely applied in safeguarding vehicle,old,child,Pet,and managing personel; Track covertly etc. Advantage:1. Locate conveniently: ...