this be a terrible product . the clock run fast -- it gain a minute every few day . the CD player skip at the slightest vibration , from when I walk across my room to when someone open the door to my building 4 floor below . frequently , I wake up to a noise like a fan with something stick in the blade rather than my cd . anyone who be look for a reliable clock or cd player would do better to spend a few extra dollar to buy something that actually work .