This easy to use, safe and silent ultrasonic tabletop nebulizer is perfect for diffusing essential oils and fragrances. Simply add water and your favorite essential oil or blends. Several time & dispersion levels are pre-programmed, and the relaxing and mood enhancing LED color light provides ambiance. Essential oils are not altered and more benefits of each oil is derived. This diffuser is digitally controlled with auto shut-off when the water level too low.