GPS tracker most cost-efficient and popular multi-function China GPS tracker

Real time online tracking gps car tracker/car gps tracker/car tracking with engine shutoff smallest waterproof gps tracker Funcations : Single Locating Auto track continuously Track with limited times upon time interval Track with unlimited times upon time interval Smart track upon time and distance interval Automatic update positions of vehicle turns GPS drift suppression Absolute street address by SMS Location based service (LBS) Monitor Data logging Data Load Charges