1.mini gps tracker 2.quadband 3.TK102 Track exactly. Can be used ... the object enters the park underground or some other places with no signals, it will report to you the last ... GSM sim card into the GPS unit. Whenever you call the unit it will respond with the coordinates of its ... where exactly the unit is located. Package includes:Gsm gps tracker, Power Adapter, User Manual, Charger, Lion-battery x ...