Fall asleep easier and more naturally as you block out irritating noises and let your mind drift AND wake up naturally to one of the soothing sounds provided with this #1 rated sound machine by Sound Oasis. This sound machine blocks out irritating noises, helps circumvent tinnitus discomfort and creates a soothing atmosphere. You will fall asleep easier, get higher quality sleep, enhance concentration, and feel more alert and comfortable throughout the day! Set the timer so you can fall asleep to these wonderful sounds or have them playing all night long! Includes 1 sound therapy system, 1 Sleep/Relaxation/Wellness sound card, 1 Spa Retreat Sound Card, 1 Nature Journey Sound Card and AC adapter. The Sound Oasis can be powered by 4 "AA" batteries (not included) for portability or by the included AC adapter for convenient use at home or the office.