Our baby loves this lullaby ... and at 15 months, he now claims the evening. The big plus, these are the images projectées ceiling. To see the baby should be lying down, it's easier to fall asleep! It operates on the AC so no battery worries. 3 interchangeable discs are nice and do not make noise when they turn. The music is basic, but we like the sounds (sea / rain). The programmer 15, 30 minutes or more is also very useful. As it is compact, it takes even on vacation. Therefore a good investment!