... there is SD card slot in TK102-2 .The GPRS data can be saved in SD card .Besides ,following ... , charging status, number of satellites, the length of the GPRS string, GSM ID (includes MCC, MNC, cell ID) ... GPRS tracking server directly but not only by telephone SMS .5)There is motion sensor for TK102-2, the unit ... can be saved in SD card if GPRS is off .8)For auto tracking, no need to send the coordinates ...