This is a Blueair air purifier that I bought new for about 20,000 yen about six months ago. I'm selling it because I haven't used it much, only about 10 times. It comes with an unused filter. Product Name: Blue Pure 411+ Model Number: 108532 JAN Code: 0689122021546 Applicable Floor Area: (JEMA) ~28m² (17 tatami mats) Recommended Floor Area: "2~17m² (10 tatami mats) Power Consumption: 1.5-10W Operating Noise: 17-46dB(A) Airflow: 0.4-3.7m³/min Purification Time per 8 tatami mats: 165) Electricity Cost per Hour: 0.04-0.3 yen 4 Product Dimensions: (mm) Width 200 x Depth 200 x Height 433 Product Weight: Approx. 2.4kg Power Supply: 100V 50/60Hz Included Accessories: Main unit, main filter, warranty, pre-filter (Dark Shadow)