Soothing natural sounds offer your clients calming, therapeutic relaxation in an instant. Six digital recordings: White Noise, Ocean, Summer Night, Thunder, Rain, and Brook. Features optional timer with automatic shut-off after 15, 30 or 60 minutes and adjustable volume control. The rhythmic sounds instill a feeling of comfort that can help lull people of all ages to sleep. Compact and lightweight design makes it easily portable. AC adapter with 4 “AA” battery option. Batteries not included. 1-Year manufacturer limited warranty.