Am actually very happy with this light. What a positive feature are the 20 different brightness levels, the integrated radio and of course the Knock light with the various Aufwachtönen. In light level 20 you can also easily read a book and therefore is also very good as a bedside lamp. The light has established itself with me after a short period as an alarm clock and want to exchange more with any other device. If one does not awaken the light with 5 different alarm sounds (eg birdsong, soft drums or through the radio) is also supported (Class implemented !!!). What bothers me is something a humming in the transformer, but which one perceives listen only on close. Find also something is too expensive the lamp, because you have to invest in a defective energy-saving lamp in a new Wake Up Light, as a replacement of the lamp inside the housing is impossible. Class, however, I find the money back guarantee (1 month test if not satisfied money back). Overall, highly recommended !!!