White Noise Black Screen Sleep, Study, Focus 8 Hours Черный экран белый шум

White Noise Black Screen Sleep, Study, Focus 8 Hours By popular request, here is one of our most soothing white noise sounds featuring a black screen. This relaxing white noise is great for helping you sleep, study or focus. With the black screen, you&benefit by keeping the room dark while sleeping, saving battery life, reducing data usage and not having to worry about screen burn-in. Sometimes the key to relaxation is to keep it simple