Since this is due to a miscalculation on my part, there is no penalty for this. The product itself is for this price at first glance perfectly okay. Only the cheap side buttons testify undoubtedly poor quality, therefore only four stars. More accurate I can not say for lack of wider experience with the product.
I can only recommend: Select size carefully! For the return of the much too large cartons (!) Took me by German Post 6.90. Since the value of goods is less than 40, the buyer shall bear the return costs.