To book: I have the Waldenbuch from the Thienemann Verlag.
Well I like here is that the reading text is not replaced by the pen, but additional information that can be seen in the illustrations in the form of a small orange circle offers. Thus, the reader, the lectrice not unemployed - which I find important for emotional level when reading!
Also typical forest noises and a couple of questions and answers supplied by the pin.
Not so good, I feel the sound quality here.
Compared to Tiptoi pen is something flashy, but one can turn down the volume, then it is absolutely fine.
On the whole, a fine round thing, this pin!
And as so often in life we have now consumers are spoiled for whale?! Ting or Tip-Toi ...