... ,Waterproof shell,Built-in large capacity 6000MA battery, long standby time of 100 days.Powerful magnets to absorb to vehicle firmly ... quick.Support external GSM antenna, GPS antenna, and external power supply for the tracker to be installed on the ... SMS3,PC Installation software tracking. 4,Web server online tracking Car GPS tracker with waterproofshell,build-in shock sensor,large capacity battery,