Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A piece of junk

I bought this for my granddaughter for Christmas 2012. She was able to use it that day to find a few coins I hid in the snow. It seemed to work as expected. The next time it was nice enough to use it outside, it did not work. The signal needle was stuck and the eliminator knob did not adjust the signal. Of course we had missed the return date. $50 dollars down the drain. Don't buy this unit.