BTUP Essential Oil Diffuser For Ultrasonic Air Humidifier With Adjustable Mist Mode And 7 Color Lights Change With Diffuser For Home Yoga Office Baby Room And Bedroom 100ml 1. Ultrasonic Air Humidifier with adjustable mist mode 2. 7 Color lights change with diffuser 3. The mist of Essential oil diffuser switch in short time indicator green light is on, Essential oil diffuser work as the interval mist mode(work 30 seconds, stop 30 seconds) 4. If water tank is lack of water, click "mist" button and the aroma diffuser shuts off automatically. 5. waterless Auto shut-off function for home yoga office baby room and bedbroom