Super glad I changed my review to provide more information. The screen brightness can be adjusted through the shaft to the right of awakening, there has 3 positions. Just press this rod repeatedly to change !!!! For the rest it is happiness. I bought 2, one for each of my children to help them get up gently in the morning. They are super fan noise of Tommies. The light gently wakes them and suddenly I found good mood. The number of features available is just incredible, nap function, sleep function, alarm clock with multiple choices: radio or nature sounds, light that turns on 3 different timing and brightness we chose ... AND ... it turns itself off !!!!!!!!!!!! There are only spoiled for choice. Hopefully they will last a long time (fingers crossed).
