Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Doesn't work

I bought this unit to take with me deer hunting. It did not track the satellites initially so I returned it. I had the same difficulty with the second unit. The seller couldn't explain why both malfunctioned so I just got my money back. My advice is to take 2 AA batteries with you, open the package, install them and test the unit before you leave the parking lot. I guess there are no satellites over Gray, Georgia.