I have bought for my children is 2 this Pojektionswecker. In the first test, everything was fine, when commissioning after Christmas was the beautiful blue backlight when not, the other the upper half of the time display had been canceled. I find it a pity that the quality of this clock is too bad, because the features are great: Display activated by clapping or a button, adjustable projection well and 180 ° reversible, temperature gauge, clock .... Now that both devices have the same error, I've returned both what thanks Amazon was easily controlled.