You wake up at night. It can not be helped. More often with age. Is not so bad. But you want then what time it is now scientific fact? Reach out and look for the clock radio, may turn on the light, then strain the eyes, something fall to the ground, get excited ..., well, what century are we living? Projection clock is needed. Is also not expensive. The first for me has cost 7. After 2 hours of continuous projection (what? Well, you know what I mean) has given up the ghost. The second, which I bought for 14 worked for 2 weeks, then the ceiling was dark again in the bedroom. Although, yes, I know Know-nothing costs nothing, but you fall back here often. This clock will cost something. The ingenious, as already described by others, you can rotate the display as desired, light sensor switches only at dusk, radio Exactly, the display goes out, nothing bothers at night. Really good! I look forward for humanity and our engineers. A downer but I've finally: surprisingly, after I turn off the light and go to sleep, the temperature rises in my bedroom, noisy display, rocketing upward. Is not it wonderful? Although, I myself did not feel the heat. I quickly could unravel the local warming. The temperature sensor is located inside the clock not far from the light source and warms up. So easy. With global warming, it will not be otherwise. And humanity is not perfect. Fortunately.