The design is elegant, but phosphorescence lasts needles 5 minutes, producing a weak glow to enable reading the time in the dark. Forget therefore the option to take a quick look at your alarm if you wake up at night ... The rear adjustment knobs are not practical at all care too small for comfortable handling (it is mandatory to use the nail to the alarm setting - lack of precision). The ringer is effective against by. If I had been in my hands, I would not have bought.