Aroma Source Sienna Ceramic Essential Oil Diffuser is an elegant and efficient diffuser for your home. With the warm white light or off illumination, this misting diffuser allows you to relax and rejuvenate with your favorite scent. The 70 ml water tank capacity allows for up to 4 hours of continuous or 8 hours of intermittent diffusion, automatically shutting off for safety when complete. The USB cord included makes it easy to power the device in any room, even smaller spaces. Relax in aromatherapy bliss with this Aroma Source Sienna Ceramic Essential Oil Diffuser!