Main function： This is a GPS system using Bluetooth to transmit data through wireless connectivity, Bluetooth Global Position System. It can be connected to Bluetooth device via wireless connectivity using Bluetooth, then transmit the satellite position data to computer or PDA. You can directly use it without mending current GPS software. You can take it with you wherever you go. You can obtain your position and moving speed exactly through satellites in space. With electronic map you will know the name of the street where you are. It can be used not only with computer, but also with PDA, Notebook, and handset which have Bluetooth function. Feature ： This device can be used without install any driver. Its shape is as small as a business card. It has inner antenna and rechargeable lithium battery, and can support many Operation Systems. It has large application range, such as aviation and navigation, geography, automobile, tour, tracking.