Sunrise and sunset simulation are excellent. I use the medium level of brightness to wake up to. I have been using the light for two weeks now, and am loving it every morning, and since I am getting up on time for once, my day starts out less stressed. I am very happy with this product. i. #RankBoosterReview #Sponsored Kavin HO #Hoyee https://www.amazon.com/Sunrise-Simulator-Daylight-Sleepers-Function/dp/B071WLBMG4