... - 2010301002172The advantages of our Aroma Diffusers1. Exquisite shape.2. Ultrasonic technology, no heating, safe and high efficiency.3. Work quietly ... the latest advanced technology, the brand new aroma diffuser uses ultrasonic technology, different from traditional diffuser, it does not need ... . It works much more efficient and steady, driven by ultrasonic waves at a frequency of 1, 600, 000 times per ...