This is a new, unused item. Type: Air Purifier Filter Type: HEPA Maximum Applicable Area (Air Purification): 16 tatami mats (approx. 280 sq ft) Filter Life: 1 year Deodorizing Function: Yes PM2.5対応: Yes - This air purifier is compact yet suitable for rooms up to approximately 16 tatami mats. In "Auto Mode," the sensor measures the air quality in the room and automatically adjusts the fan speed. - In "Sleep Mode," the unit operates at low noise, and all indicator lights except the "Sleep Mode" sign are turned off, so it won't disturb your sleep. - You can check the air quality in the room by the color of the "Air Quality Sign" on the control panel. Thank you for viewing.