... SOS, geo-fence, locating and google software Child GPS tracker with SOS, geo-fence, locating and ... 10, GPRS mobile station class BGPS chipJRC high sensitivity GPS chip groupGPS sensitivity164dbmGPS frequencyL1, 1575.42MHPosition accuracy2.5m ... status( engine, door), speed, mileage, direction, GSM signal, GPS signal, Longitude, LatitudeMileage1. mileage statistics, can synchronize initial mileage2. ...