The perfect choice for even the most discriminating massage therapists and aromatherapists, it is also great for home use. Part of our Professional Series line, this electric diffuser is designed to derive the optimum therapeutic benefits from essential oils by using cool evaporation combined with air circulationJust add a few drops of our therapeutic essential oils or synergistic blends to a reusable pad. Turn on the power and select the desired fan speed. Includes five reusable aroma pads and adapter. Intended for 110V operation only. Diffuses an area up to approximately 300 square feet. External dimensions are approximately 5" round x 5 1/4" high.