Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Total Waste of Money!

This worked for about three workouts then it fell apart. The back fell off and the batteries fell out, so I figured I could just use tape to keep the batteries in...no way. If the batteries fit in tight, that would have solved the problem, but they didn't. They were loose. A total waste of money. I'm am now on the hunt for a timer that actually works!