Feature 1 Fast and precise positioning adding AGPS auxiliary star positioning function 2 Increasing GPRS and SMS mode compatibility functions 3 Increase power saving mode deep dormancy ultra low power consumption 4 Humanized design with hanging buckle or lanyard 5 With new GPX function Specification Dim 63mm x 46mm x 21mmWeight 39gNetwork GSM GPRSBand 850 900 1800 1900MhzGSM chip MTK6261GPS chip U blox 7020GPS sensitivity 159dBmGPS accuracy 5mTime To First Fix Cold status 45s Warm status35s Hot status 1sWork voltage 5VStorage Temp 40C to 85COperation Temp 20C to 55CHumidity 5 95 non condensingWeight 39gPackage Included 1 X GPS Tracker TK2011 X Charging cable1 X Manual