GPS+LBS Dual Positioning Ways: If the gps signal is good, the device will locate via gps satellite, if not, the device will locate via LBS Under GPS locating mode, the accuracy is 5-10 meters, under LBS locating mode, the accuracy is 100-2000 meters Realtime Tracking: You will can realtime track the device on google maps via mobilephone, tablet and computer, and the minumum data upload interval is 10 seconds History Route Playback: The APP and web server can record the upload data of the device up to 6 months, you will can playback the history route at any time Long Standby Time: It has built-in 1500 mAh Li-ion battery, the standby time is up to 25 days and the working time is up to 3-4 days Waterproof IP67: The waterproof level of this device is IP67, it can resist splash water but can't be put under water Remotely Voice Monitor: Send "Monitor+Password" to the device first, then the device will turn intoMonitor 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 Overspeed Alarm: This alarm works only under continuous positioning mode.When the unit speed is exceed the speed you presetted, it will send message ldquospeed alarm rdquo to the admin number every 5 minutes Shock Alarm: After you did the shake alarm setting,please keep the tracker being stationary for 5 minutes, then this function will start working. It will send SMS ldquosensor alarm rdquo to the admin number when the unit get shocked Movement Alarm: When the units stays immobile in a place for 10 minutes, the user can set up the movement alarm by this command "move+passord", then in case the device moved 500m it will send alarm SMS "Move Alarm+Latitude and longitude" to the authorized number Geo-fence: Set up a geofence for the tracker to restrict its movements within a district. The unit will send alarm information to APP and web server when it goes out of or get in this district Powerful Magnetic: With super strong powerful magnetic,can be very easily installed Lifetime Freeto support PC tracking platform and smartphone tracking application Specification: Size: 55x36x21mm Weight: 58g Network: GSM/GPRS Frequency: GSM 850/900/1800/1900Mhz GPS Sensitivity: -159dBm GPS Accuracy: 5m Time To First Fix: Cold status: 35-80s Warm status: 35s Hot status: 1s Wall Charger: 110-220V input, 5V output Battery: Built-in 3.7V 1500mAh Li-ion battery Standby Time: 25 days Storage Temp: -40 to +85 degrees Operation Temperature: -20 to +55 degrees Humidity: 5%~95% non-condensing Package included: 1 x TK913 Main Unit 1 x USB Cable 1 x English and Chinese User Manual Other things not included