build quality is very good, the design is perfect for kids and it will be great fun for few hours with your kid. But even my little one got bored of it rather quickly as there are not many possibilities. Yes you can play around with a sequencer and there are thousands of different notes and patterns you can make, but by the time you did a hundred of them, you will get sick of the same boring presset. My recommendation for producers of this box is to upgrade it with a choice of sounds too.