We bought this bear for our daughter when she was about one month old because she would not sleep in her crib for more than an hour at a time. As soon as we turned it on she started to doze off. She is now 4 months old and we still use it. She loves it and looks for it before she goes to bed. The down side is that you will go through a ton of batteries but its worth it for her to get a good nights sleep (and us too!).