... tracker zy/bicycle gps tracker/gps police tracker parameter: mini gps chip tracker/smart gps tracker/3g gps tracker ... GSMFrequeny channel850MHz/900 MHz /1800MHz /1900MHzGPRSClass 12,TCP/IP build in GSM MODULEGPS sensitivity-159dBmGPS positioning accuracy(2D RM)10 ... shortcut4,Unique appearance,Striae SBS glue craft5,Vibration alarm detection, sensitive and no false positives, Five levels adjustable6, ...