Uses the therapeutic qualities of natural sounds to bring calming and peaceful relaxation to any setting. Ideal for use in the home or office. Features 10 high quality digital recordings to create a pleasant environment: Rainfall, Ocean Waves, Summer Night, Waterfall, White Noise, Running Stream, Heartbeat, Tropical Forest, Songbirds and Thunderstorm. Heartbeat sound is ideal for helping to soothe babies to sleep. An optional 60-minute timer with automatic shut-off and battery allow for convenience and portability. AC adapter included.