Open your senses with the Ellia Ascend Ultrasonic Essential Oil Diffuser. Simply add water and up to 7 drops of your favorite essential oil, and let the natural aromas fill your home or work area. The beautiful, flowing wave pattern and natural ceramic and wood materials complement nearly any décor. The mist and light features give your home or office a relaxing ambiance. With a mist delivery of up to 6 hours continuously or 12 hours intermittently, you can enjoy the soothing color-changing light and your favorite scents without worry.