Our sound machine and night projector combo is the color-changing nightlight that puts sensory stimulation to the ultimate test. 'Sleep n sound' is designed to turn any room into a magical wonderland, using ocean waves noise, seagulls sound, falling rain, the crackle of a campfire, crickets, trickling of water & white noise to make your baby or toddler fall asleep faster and stay asleep longer when this night light is used. Our studies have shown kids sleep faster, stay asleep longer when this nightlight projector is used.