The big plus point of this toy is that it is scalable: early child only play with the cubes by rotating them, and triggering the music; but later he will learn and answer questions posed by the toy (eg "Which animal makes Meow?", "What instrument does that sound?", ..).
In addition, this cube is really robust because after several falls from the high chair, it works just as well! And the batteries (supplied), also still work after 6 months of use.
In short, I recommend it, especially since the price is really very interesting.