this tracker is a new product based on the wcdma/gsm/gprs network and gps satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. It can track and monitor remote target by sms or internet.The product fully supports the functions of sms / gprs / internet data transmission, to make it more widely used in large-scale monitoring, emergency scheduling, location-based services, traffic safety and many other areas of management.It is based on gsm/gprs(850/900/1800/1900mhz)wireless telecommunication internet and gps satellite global position system, track by several ways. Provide monitor software and global map. Real-time track through the monitor software in your pc; track through your pda cell phone and googleearth.