TKSTAR GPS Tracker Car 10000mAh 4G TK905B GPS Locator Waterproof GPS Tracker Auto Magnet Voice Monitor Free Web APP PK TK915 Type12G 4G 10000mAh details: Function Web platform & APP:we provide life-time free Web and tracking software Long standby time: it has built-in 3.7V 10000mAh Li-ion battery, can standby up to 120 days Powerful magnet: It has built-in super strong powerful magnets, can be very easily installed Shake Alarmkeep the tracker being stationary for 5 minutes, this function will work. The tracker will send SMS sensor alarm! to the admin number when the unit get shocked. Motion AlertIt enables device triggered a call/SMS alert when motion is detected, after 3-minutes of non-movement. Over speed Alarm: This alarm works only under continuous positioning mode. When the unit speed exceeds the speed you presetted, it will send message to the master number. Remotely Voice Monitor:Send Monitor+Password to the device first, then the device will turn into monitor mode, now if you make call to the SIM number in the device, it will pick up your call automatically and you will can monitor the voice around the device!