I bought this reading light for the new OYO eBook reader. Unfortunately the brightness is not enough to put the whole page in the right light. The upper part of the page is still sufficiently illuminated, the lower part lies in semi-darkness. This is partly because the adjustment of Kandle not sufficient. The adjustable arm is too short to illuminate a sufficient area. Part of the light is lost by the fact that although the Kandle illuminates the own clamp foot, the reading surface, however inadequately. In addition, the holder sits - at least as regards the OYO - not optimal; a rather wobbly affair in my opinion. You could improve the Kandle mM at best by the fact that you created him from transparent plastic ... As for the optimum reading light, therefore I am still looking - the Kandle it is definitely not!