I use it as a living room clock and had to darken with Tönungsfolie (30%), so a star deduction. In other possibly adjusts the brightness (I think it is not a dimmer installed or not working properly?)
As a bedroom alarm clock I would not use him and awarded only reluctantly star. On the one hand due to the bright display, on the other hand the alarm is terrible.
So 4 stars especially for use as a living room clock!