1. GPS+LBS Dual Positioning Ways: If the gps signal is good, the device locate via gps satellite, if not, the device locate via LBS! Under GPS locating mode, the accuracy is 5-10 meters, under LBS locating mode, the accuracy is 100-2000 meters. 2. Realtime Tracking: You can realtime track the device on maps via mobilephone, tablet and computer, and the minumum data upload interval is 10 seconds! 3. History Route Playback: The APP and web server can record the upload data of the device up to 6 months. 4. Long Standby Time: It has built-in 3.7V 20000mAh Li-ion battery, the standby time is up to 240 days and the working time is up to 15-20 days. 5. Powerful Magnetic: It has built-in powerful magnets, Easy to install. Overspeed Alarm: This alarm works only under continuous positioning mode.When the unit speed is exceed the speed you presetted, it send message "speed alarm!" to the admin number every 5 minutes. Shock Alarm: After you the shake alarm setting,please keep the tracker being stationary for 5 minutes, then this function working. It send SMS "sensor alarm!" 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 "move+passord", then in case the device moved 500m it send alarm SMS "Move Alarm+ and longitude" to the authorized number. Geo-fence:set up a geofence for the tracker to restrict its movements within a district. The unit send alarm information to APP and web server when it goes out of or get in this district. Name:GPS Tracker Colour:Black Material:ABS Package Contents: 1 * Charging Cable 1 * Tracker 1 * Chinese and English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.