This alarm clock is easy to handle with the manual. The projection of the time on the ceiling or wall is great. The time setting is done by a gray dial that you turn, I find her sympathetic. For the intensity of light: Me Me, if I'm not in the dark, I can not sleep. If for some light may seem embarrassing, I can not find. Big downside, in the description, you'll see that the alarm clock can operate with a 9V battery. I warn you, the battery has a backup time in case of power failure. In no way you can do without the power outlet for operation of the clock radio.