Latest Quad-band Child GPS tracker with SOS, geo-fence, locating and google software Child GPS tracker with SOS, geo-fence, ... then tracker will report data to platform when GSM signal is available. Special features (work with our tracking ... status( engine, door), speed, mileage, direction, GSM signal, GPS signal, Longitude, LatitudeMileage1. mileage statistics, can synchronize initial mileage2. ...