bad Playstation trainer

Hello There,
we had this device (and two others from the same company) looked at the 4th birthday of our son and are totally disappointed.
First of all, it is striking that a permanently accompanied by a loud droning; otherwise you can not call the monotonous melody of poor quality. One can indeed lower the volume, but still borders on psychological terror.

The quality of the display is bad and the graphics displayed on have little to do with the symbols in the manual. So you can work through the functions - or leave it.
A child has certain rather the endurance to but pedagogically the whole implementation is the lowest level.
The electronic toy with quality for the same money is feasible, you can see for example in "TipToi" (whether TipToi educationally brings much more remains to be seen).

Sorry, but these devices are only plastic garbage!