How does an orbit bike tracker work?

I'm curious about how an orbit bike tracker operates. Can you explain the technology behind it? Does it use GPS signals or some other form of location tracking? And how does it connect to my phone or computer so I can monitor my bike's whereabouts? Also, what happens if the tracker gets stolen or the battery dies? Will I still be able to track my bike? I'm interested in understanding the full functionality and reliability of this product before making a purchase.