Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not accurate; Not worth your money

Bought two of these thermometers to get an idea of the temperature in my snake's tank. I stuck one on the left side of the tank and one on the right side, and waited for the hand to move. The hand never moved and said my tank was 59 degrees, which I know for sure is not right. The thermometer never worked, no matter how long it stayed in the tank -- still 59 degrees. And to add to the thing not even working, there's tape on the back instead of a suction cup and now I can't remove the thermometers from the glass.Save yourself the trouble and get something else. Even if you're looking for something inexpensive, you still want it to be functional! Don't waste your money or time.