The innovative Versa-Flow technology continuously moves large volumes of air and creates uniform circulation. With this technique, a Vornado Tower does not need to oscillate like other fans. As a result, there is less wear and tear, no disruptive noises, and a much more pleasant airflow. A sturdy base prevents the typical wobbling of conventional devices. Five speeds and a 1 to 8-hour auto timer allow you to always find the right setting. The protective grille is removable, making it easy to clean the Vornado.