A super useful travel sound machine. Volume ranges from very soft to very loud. I just wish it fastened a bit more easily to a car seat, for example. But we have used it quite a bit in the past few months since purchasing it.
My baby loves this machine! It really makes a difference. We use it for sleeping and when we go out, take it in the stroller. When she gets fuzzy, I put it on and it clearly makes her more calm. Highly recommended.