My husband has a Phillips goLite. He got his from his mental health doctor. My husband was diagnosed with S.A.D and instead of increasing his medications, he has him using this light. It needs to be at least an arms length away from you and he only needs to do it for 20 minutes a day preferrably in the mornings. The top 3/4 is the actually light and the bottom 1/3 is a clock, and the timer. I looked them up on the internet and they cost $199 and I am sure that you could probably find one cheaper.