Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great gift.....not exactly.

I received this as a Christmas gift. I thought it was a perfect gift for me. I read a lot and knew I would get a lot of use out of it. Quite a number of words I was looking up weren't in this dictionary so I was disappointed about that. Then sometime in February...not even 2 months of use...the unit stopped working. I thought it was the battery so I changed the battery. It still didn't work. I thought there was a chance that the new battery could have been bad also so this time I took the unit to a battery store. They tested both batteries and both were fine. It was the unit itself that stopped working. I tried the reset button located on the back of the unit, but nothing happened with that either.I had high hopes, but am very disappointed