this product sound good , but do not live up to its description . the clock run fast , and the radio be cheap . the built-in light be very small and dim . I get the converter to be able to use my own lamp in addition , and this provide enough light , but I still have 2 problem with it . first , the light increase be step-wise in seven level , not smooth . with my brighter light , the increase be noticeable and jolt I awake too fast . second , the alarm-light function on this clock do not work properly . for example , I set it to reach full light at 6:30 be on a 30 minute cycle . it start the cycle early , shut off the light completely at 6:15 , and turn it back on at full brightness again at 6:30 . not exactly a gradual waking process . I would not recommend this product at all . there be other much better product that do not cost that much more than this . go with one of they , you 'll be happier .