White noise, which is created by the combination of all sounds, makes babies feel like they are in the womb and thus sleep comfortably. Although it is called white noise, it is not actually a noise. It has a calming effect on babies as well as animals and humans. You can calm your babies, focus, and sleep with this 10 hour black screen white noise video. With the black screen, you'll 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 😀 #WhiteNoise