The XGPS is a GPS that connects to your iPad, iPhone, Touch or Andoid tablet using a bluetooth connection. It operates with an internal rechargeable battery. The XGPS150 is very simple to use. There is a quick set up process that includes pairing your device with the Receiver. Once this is done, the Receiver will automatically connect to the device it was last paired with, and you will be able to use it with hundreds of apps that require location information.