The ultimate in tranquility and comfort, the Midea Bladeless Tower Fan provides an extremely quiet operation throughout all 10 speeds, sound is undetectable through the first 4 speeds! Air from the maximum speed can be felt up to 25-feet away, making this fan great for use in a large room. An oscillation function allows for customized airflow. You could also set the oscillation feature for stationary use, or 60-degree rotation. The Midea Bladeless Tower Fan also cleanses the air your family breathes through plasma ion technology and HEPA filters, which meet stringent California certification standards.