Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A very disapointed buyer

I am now in possesion of the second unit. The first one would shut itself off whenever I wanted to listen to the audio. That problem has not cropped up on this unit but now the locate function will not work. Both problems occured right out of the box. I will persue yet another warranty replacement but only because they refuse to give me my money back. Beware this product just does not seem to work.