Enhance the ambiance in your home and make it a healthier place to be for your family with the addition of this NOW Foods Ultrasonic Oil Diffuser. This appliance has a small and compact design yet is able to fill up your room with a pleasing fragrance. The Now Solutions oil diffuser works quietly and disperses a cool stream into the air to cover up to 250 square feet of space. It also has changing lights. Now Foods ultrasonic oil diffuser has a continuous run time of four hours and a capacity of 120 ml.