Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Doesn't Last

My infant daughter sleeps with a sound machine. This one seemed very nice at first, but after about 4 months it quit working - the sounds would randomly come on and off. I thought we must have just gotten a bad machine and bought another just like the first...Here we are a few more months down the road and this one is going out too. Looks like a nice little machine, but the quality isn't there. I won't buy another.