The sound machine has 6 natural sounds including rain, brook, ocean, thunder, white noise and summer night. Natural sounds mask background noises so you sleep better. This white noise machine helps you fall asleep easier, sleep better, wake-up refreshed. Leave the sound on all night or use the optional timer that can be set for 15-minutes 30-minutes or 60-minutes. The sound machine is great for travel. Powered by an AC adapter (included) or 3 AA batteries.
