Find your calm with the Brookstone Mist Ultrasonic Aroma Diffuser. Carefully designed with a beautiful marble pattern to be the perfect accent décor piece for any nightstand or bedroom. Choose your favourite essential oil to instantly diffuse your favourite scent for an even, natural aroma. The Soft noise creates a warm and inviting ambience, sure to promote relaxation and calmness. With convenient 1, 2, 3-hour timer settings, you do not have to worry about forgetting to turn it off. Brookstone finds practical ways to address your universal needs, incorporating the ancient practice of aromatherapy with modern technology that diffuses an even scent throughout your space. Let us take on your day, so you can take on the world. How to use: Fill water tank to maximum water level line. Add 10-12 drops of your favourite essential oil or diffuser blend. Turn on diffuser and enjoy a calm and refreshing atmosphere.