... , anion-therapy, color-therapy, humidifying, air purifier and night lamp together Ultrasonic Aroma Diffuser, Ultra-sonic wave vibrate with water ... 000 times/second, releasing plenty of oxygen, anions. Add pure essential oil, it will completely nebulization. Built-in colorful lights, like ... Color can be changed, also can be use as night lamp.9. Applicable Area:meeting room, hotels, house and apartments( ...