... -mini size ,waterproof -real time tracking -SOS service -free platform hot sale Smallest gps tracking device for child /pets -GSM GPRS ... Covert TrackingFeatures & specification1)The minimum interval for data sending of TK102 is 30 seconds, but with the new ARM7 ... direction, altitude, battery voltage, charging status, number of satellites, the length of the GPRS string, GSM ID (includes MCC, MNC ...