GPS and Location Based Service named A-GPS， when tracker in underground or tunnel， you can get location by AGPS
Real time tracking by cell phone and platform， also can support get location every 5 seconds
GPS accuracy is 10m
Over speed alarm / sleeping power-save mode
Can locate and monitor distant object
Built-in Li-ion battery， long standby time
Check the history of route on platform by web monitor center
The software supports iOS and Android
Simply insert a standard GSM SIM card into the GPS unit
Whenever you call the unit， it will respond with the real-time geo-coordinates of its location via an SMS
If you have a smartphone then you can click over the geo-coordinates (hyperlink) to see the exact location on Google map
With some very basic/straightforward setup， you can also configure the GPS tracker to send location information (via GPRS) directly to a computer or web-server
Every tracker comes with bundle PC software for real-time location tracking
Support tacking by demand， tacking by time interval automatically / SOS assistance / two way calling
Applications: Vehicle rental / fleet management / outdoor sports / protecting child / the elder/ the disabled / pet / providing peace-of-mind for businessmen / personnel management / criminals tracking

Parameters:
Chip: Ublox
Charging time is 8-12 hours
Charge for more than 12 hours for the first time use
Car charger: 12-24V input / 5V output
Wall charger: 110-220V input / 5V output
Battery: Chargeable changeable 3.7V 5000mAh Li-ion battery
Standby: 60 days
Storage temperature: -40-85 degree centigrade
Operation temperature: -20-55 degree centigrade
Humidity: 5-95 percents non-condensing

Warm Prompt
Clean it with dry cloth
Do not disassemble the device
Use original battery and charger