xartier2 years ago000Do the numbers light up all the time or only when you touch the alarm clock? Does it make a difference whether the alarm clock is only used in battery mode or is plugged in?Show in original language (German)Anonymous2 years ago • purchased this product000purchased this product Helpful answerIn battery mode, the numbers only light up when you touch the alarm clock.Don't know if it makes a difference when plugged in.Show in original language (German)Comment