I have used this a few days now and I must say it is a really cool product. I love using essential oils so the fact that it combines these with the alarm clock and some nature sounds is really awesome! However I am only giving it 4 stars because some of the sounds are not as authentic as they are on the sound machines I have for my children which are also made by the same brand as this device. Also it was kind of difficult to figure out how to get the alarm set with the sound and the light and to make sure that the essential oils would come on also. Once I figured it out though it all works really well together!