Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Shut Off Problem

Don't buy this product. I received this MP3 player as a gift for running and other active sports. Unfortunately, it shuts off at the slightest tap. I've been told that the problem is the spring that holds the battery, but no amount of fiddling seems to solve the problem. It still works if I place it very carefully on a level surface when I use a machine at the gym, but the slightest tap will shut it off. It is maddening!!!