1.Long battery Life, last for 3-4 days 2.Vibration sensor for automatic working mode setting, power saving 3.Passive GPS anten 1.GPS positioning, more accurate than GSM.2.GSM/SMS communication and GPRS TCP/UDP connection3.Support LBS, can still track indoor subject when the GPS signal is blocked.4.Low power consumption, built-in intelligent sensor for power saving, automatic working mode ...