Product okay. Reliable and good quality. Probably very high, known by other similar products life expectancy. The only stupid is that the description and the drawing is somewhat misleading. "Zoom" does not mean now times zoom in the distance, but in the width. Say, a regulation of the width is not possible. Conclusion: Again, the manufacturer's name has a high portion of the price, quality as expected, however, limited function compared to the expensive products from the same home.
