Cool down with purified air with the Dyson Pure Cool Me Personal Purifying Fan. Utilizing a HEPA filter, this device captures 99.7% of pollutants and allergens as tiny as 0.3 microns. Dyson Pure Cool Me helps improve the air quality around you while delivering cool, purified airflow. Featuring a unique dome mechanism, the personal purifying fan offers accurate airflow control. By controlling the strength of each air jet, it sends airflow exactly right where you want it. Offering smooth oscillation, the personal purifying fan can rotate from side to side. Similarly, it has a 70-degree range for delivering airflow. When it is time to sleep, simply set the timer to stay cool and comfortable throughout the night. Finally, the Dyson Pure Cool Me fan provides built-in reminders to let you know when your filter needs replacing.