Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Didn't work after 3 days.

Bought this because we had a similar Conair model (SU7) that worked very well for over 2 years. It was the only thing that would get our daughter to sleep through the entire night. We ordered this model because we needed the same sounds, minus the alarm clock.Should have expected problems when my first impression was how cheap and flimsy it felt out of the box (not solid like our SU7). Sure enough, after 3 days of use the sound started randomly going in and out. It isn't an issue with the auto shutoff feature or the volume control. Sometimes it works for 5 minutes, sometimes several hours. But never through the night. When it does shut down, we have to power it off and on several times before the sound kicks back in.I realize for $13 you aren't going to get the greatest quality. But you do expect it to work for more than 3 days. My advice, spend a little extra and get something better.