This is a very weird looking CD player. It looks like a head of a duck when a CD is set. 

There’s a round body that rolls and a black speaker. the speaker is attached to the body at its axis and it rolls around the body.The functions are just play/pause/next/previous and volume up/down. To turn up the volume, you roll the body so that the “beak” opens up. When you turn it off, just let it stop quacking.

That’s it. I wouldn’t stop rolling it for a while I had it on my desk. And my kids would never leave there.