... ,goods,elder,kid,employee,businessmen,outworker,pet,travller,lover,students personal GPS tracker factory Product DescriptionGeneral: Based on GSM/GPRS and ... or GPRS. Basic Operation: Insert SIM Card into GPS Tracker, use mobile phone to call this SIM number, you will get ... message on specific Longitude and Latitude. Then you can use Google Earth Software (CD Driver included) via input Longitude & ...