the concept be great , the build in lamp be terrible - about as bright as a night light , do not know how that be suppose to wake I up . also , if it go out it be not cheap to replace . to get any use out of the Sunrise\/Set feature you have to have it control a external lamp with a external power adapter almost the size of the clock itself . the clock itself feel like a toy , light plastic and cheap construction with flimsy button that work for a few month and require small finger -lrb- I have those and still have to use my nail -rrb- . I would recommend that you spend the money on a clock of this type with a build in external lamp control , most of those even come with sleep sound . can not beat that . but really , really , do not buy this alarm clock . perhaps  Sunrise Sun Simulator Day Light SRS150 Alarm clock  or even  Apollo Health DayBreak Duo Dawn\/Dusk Simulator