content: The Ocean Wonders Aquarium was one of the last items I registered for but is by far, one of the best presents we have received for our newborn son. My husband and I used it from the first day our son was born and at two months of age, he still falls asleep to this music. For a newborn, the Ocean Wonders Aquarium is much better then any mobile as kids do not follow the moving objects until they are at least couple of weeks old but they do respond to sounds. The music is very soothing and will calm a crying baby in minutes. The downside - 15 mins of playing might not be enough so pressing the play button several times can be a pain expecially at night if you have a separate baby room. A remote control would be a great improvement.