I was surprised by the size of the CD player, I imagined larger (that said, I could look at the dimensions in the description ....) So it is very compact, fairly complete, easy to use. I would have liked a mode button that allows to spend CD mode USB mode (this is done automatically if the key is plugged in, it is what is read). A "mode" button would leave the key in place permanently; especially since my daughters are unable to put on their own key. Listed playful, they love to put music when they want it; walk-books cd thoroughly as (much more than when they had to ask me!). In short, great buy, which pleases many. I advise a product such as this, which runs on industry, compared to cd-player dedicated to children who often run on batteries (in which case, as they love, you really provide many many batteries) Of course remains to be seen longevity ....