In principle, the operation of the alarm is silent, however, the SNOOZE / LIGHT makes when you press a loud popping noise. The +/- keys have a little game, which does not interfere with the principle, but they rattle so easily during operation. The alarm can be adjusted very easily using the +/- keys. Here comes while typing every three seconds from the backlight, so that they must be constantly re-turn. The alarm can be in the morning very easy remedy prematurely: You just have to slide the tab on the left side down. While the snooze function can not be disabled in advance. One can the snooze but after waking comfortable with the slider left to the left. The alarm has a medium-loud sound, only more slowly, then more quickly, without crescendo. The time is easy to read during the day, at night also, but only if the alarm is set slightly lower than eye level. The display is illuminated perfectly. The alarm is not continuously displayed. With the + or - button it can be but show for 5 seconds. The build quality of the alarm clock makes a good impression, only the key weaknesses of the picture somewhat. In my search for a radio alarm clock I've tested 29 radio alarm clock. If you're interested, you can test all 29 Funkwecker under "Articles" read on stefanrohloff.de.