I had the very first Philips Wake Up Light model. But the latter is no longer any sound. So I bought this replacement model. It is very basic, it was that his birds jungle. The touch adjustment is not practical (I'm 35 and I'm not slouch). The light output is not very high. By cons impossible to decrease the time display at night ... it illuminates the whole room, it bothers me. In short very big disappointment, especially for the price, I think outright sell it and buy the HF3520 / 01 which looks over my previous level.