Safe and quiet improve your air quality and add a wonderful fragrance to any room with a Health Smart essential oil diffuser and humidifier. Our silver-plated ultrasonic atomizer uses 9 fan leaves instead of the standard 7 for faster heat dissipation and less noise to produce a cool vapor mist in its purest form. Essential oils are evenly dispersed for soothing aromatherapy that encourages relaxation. Our 2-in-1 diffuser/humidifier also effectively moisturizes dry indoor air to reduce allergens, relieve respiratory symptoms and eliminate pet odors and other smells like cigarette smoke. What's included along with a humidifier diffuser, you'll also receive an AC adapter, 6 ft. power cord and instruction manual. To use: lift the tank cover, add water along with 3-5 drops of essential oil (not included) to the fill line, connect the adapter and turn on. Please only use oils approved for aromatherapy. - Dimensions: H 9.37 in. x W 5.5 in. Working Time: 10-12-hours - Diffusing Time: Up to 16-hours.