I received this as a gift, but I can't use it at home, so I'm putting it up for sale. It's new and unopened. [Product Description] Air purification: ~31 tatami mats Humidification: For prefabricated rooms ~21 tatami mats, for wooden Japanese-style rooms ~12.5 tatami mats This is a high-grade model of a humidifying air purifier that efficiently purifies the air with a unique airflow, even for concerning airborne particles. It is equipped with the unique air purification technology "Plasmacluster NEXT." It achieves high humidification performance with a unique structure that humidifies the collected air with two humidifying filters. It supports the "disposable humidifying pre-filter" that can be peeled off and discarded when dirty. When you connect your smartphone and air purifier via wireless LAN, it connects to the cloud's AI to accumulate and analyze operating status and air information.