- Provides ten fan sounds, ten white, pink, and brown noise variations, and two varieties of ocean sounds: calm and surf. - Helps mask disruptive environmental noises to facilitate sleep. - Safe, solid-state design powered by AC or USB that creates unique, non-repetitive sounds with no moving parts. - Precise volume control, optional timer, and 3,5 mm jack for headphones or portable speakers. - Includes power adapters for Europe and the USA. - Ideal for creating disturbance-free work areas or reducing the distracting effects of outside noises.