You want an alarm clock, on which you at night time? Without pushy-bright light or annoying search for the light button, without annoying mains plug or constant change the battery? Then the concept of calvi is exactly right. You can use the alarm clock so that the background illumination in the dark of all alone is concerned. The display shines weakly. There is enough light the time to recognize, but not too bright that it is disturbing. By energy-saving LED technology keeps the battery still length.This text is machine translated.