Dyson Air Purifier Big+Quiet Covers 1100 Sq. Ft Advanced HEPA H13 filtration 

• Auto mode constantly monitors the air quality, intelligently adjusting airflow until the product has evenly purified the whole room.
• Smart technology controlled by app, voice or remote
• Fully sealed to HEPA H13 grade airflow and filtration system. So what goes inside, stays inside.
• Control your airflow
• HEPA filter life of up to 5 years
• Hidden wheels make it easy to manoeuvre across a room – designed for hard surfaces.
• Dyson's quietest most powerful purifier