Sound Oasis is a unique sound and tinnitus therapy product that allows users to create their very own sound environment conducive to relaxation, sleep and improvement of everyday life. By bathing a room with authentic sounds of nature, Sound Oasis blocks out irritating noises, helps circumvent tinnitus discomfort and creates a peaceful atmosphere so users fall asleep easier, get higher quality sleep, enhance concentration, and feel more alert and comfortable throughout the day! Sound Oasis also incorporates the world!s only "sound card" technology which enables users to add new sounds to their Sound Oasis unit by simply inserting a memory card containing 6 different sounds. Sound Oasis incorporates a multi-position timer (with 4 selections: continuous, 30, 60, and 90 minutes), a unique "gradual off" volume reduction feature for a peaceful decrease in sound volume, a rotary on/off volume control, headphone jack and a one-touch off/ resume button that stops the unit or repeats your last played sequence. An omnidirectional reflective speaker projects sound from the back of the unit for rich, deep sound and the unit can be conveniently mounted to a wall, used flat on its back, or in an upright position for minimal use of tablespace. Sound Oasis can be powered by 4 "AA" batteries (not included) for traveling, or by an AC adapter for convenient use at home or the office.