4G LTE-FDD & 2G GSM/GPRS: This GPS Tracker supports the latest 4G LTE FDD network on multiple bands for operation globally and also stay with a fallback to 2G GSM/GPRS, can work perfectly around the worldwide countries. Positioning by GPS & LBS, Real-time Tracking on for Maps GPS Positioning Accuracy : 5-10m; LBS Positioning Accuracy: 100-1000m 350mAh Backup Battery: With 350mAh big backup battery ,the tracker can last around 2-4 hours once the external power was disconnected. History Route Playback: User can track the history route of the device up to 6 months via both the Web and APP. Angle Uploading: When turning, the device will upload a GPS data in order to reflect the details of turning. the uploaded positioning data will be more denser and the trajectory query is more accurate. SIM Card Balance Enquiry: The balance of the SIM card in the tracker is available for checking , whenever you want to know it, you send sms to inquiry will be ok. Door Open Alarm: If someone opened the door of your car, the tracker will send alarm information to you. ACC ON/OFF Alarm: If tracker detect "ignition on" or "ignition off" signal from ACC wire(white wire), tracker will send "ACC on/off+&longitude" to authorized number to tell you the vehicle has been started or stopped. Blind Area Alarm: If the tracker lost fix to GPS satellites , it will send "No gps+&longitude of the last know position" to the authorized number. SOS Emergency Call: With SOS panic button , you will can make SOS call out once met emergency situation during driving. Manually Cut Off/Resume Fuel: Multiple Alarms, Vibration Alarm, Overspeed Alarm, Power Disconnection Alarm,Geo fence. This tracker can work with the optional accessory fuel sensor to detect the fuel level of your vehicle. Specification: GPS403B Color: As Shown Material: plastic Package Contents: 1 x GPS Tracker Kit 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.