The first Dyson personal purifier fan. Cools in summer. Cool with purified air. Not dirty air Our personal purifier fan is engineered to help improve air quality. It projects cooling, filtered air - wherever you need it. Removes 99.95% of allergens and pollutants from the air1 The fully-sealed filter combines an activated carbon filter to remove gases, and a Glass HEPA filter that captures 99.95% of ultrafine particles from the air.1 Focused airflow, at your fingertips Using Core FlowTM technology to project a precise stream of air, you can adjust the dome's position to angle the flow higher or lower. With 70 ̊ oscillation. For a comfortable night's sleep Set the sleep timer anywhere between 30 minutes and 8 hours. So you can keep cool and comfortable while you rest. See your machine's status The LCD screen show you airflow speed, filter life, oscillation and sleep timer. Plus: Easy filter maintenance with built-in reminders to show when each filter needs changing Remote control 1 Tested to EN1822. Particles as small as 0.1 microns. Caution: This product is not suitable for use for people fitted with pacemakers.