I bought 4 of these as Christmas gifts. I opened them and charged them up to make sure they worked before wrapping them. One of the 4 had bad speakers and wouldn’t play music so I sent it back without any hassle. They shipped me another one that worked just fine. They were a big hit at Christmas last year. They are build good and heavy. The battery life is long. The ride is smooth as long as you’re riding on a smooth surface. Functionally it works as described and the design of the built in speakers are a plus. The kids have been plying on them for a year now without problems, so the Value for money was good.