Aroma Electric Ultrasonic Ceramic Diffuser Ultrasonic Essential Oil Diffuser, White, Ceramic 1. Elegant design, featuring natural environmental friendly handmade matte glazed ceramic housing. 2. The ultrasonic diffusing feature ensures the integrity of the essential oils’ beneficial molecular structure and allows for ease of healthy bodily absorption. 3. Ultrasonic water-oxygen diffusing produces healthy anions. 4. Timer allows you to set and choose your length of consistent operation. 5. LED light provides soft illumination with 2-level brightness. 6. Combines the benefits of aroma-therapy, aqua-therapy, and light-therapy. 7. The unit may also be used as a non-aromatherapy humidifier.