Instruct: Classify the given review as either positive or negative.
Query: Doesn't last

I tried exchanging this sound machine 3 times before giving up and just returning the item. Each unit had the same problem. They each seemed to work fine for about a month or so but after that the unit would only work when I pushed down on the power wheel. There must be a loose connection in the power supply or something like that. It has a nice selection of sounds but HoMedics really need to work on the quality of this product.