As a bookworm I have already bought virtually every book lamp. By chance, I have found this product in the newspaper. I figured ginial - no tiresome and absteckem when turning - drive your dream clips to the glasses. So I gave me the lamp for Christmas. The battery is still holding and it is illuminated the whole book. The product is easy and you do not feel at the spectacle. It is very pleasant that I can align the light beam as desired with the ball joint. Finally, the light is no longer dependent on the book and when tinkering on PC under the table she has also proven to me well. Conclusion: High quality and convenient!