Thank you for your interest in the product. Product Description: Quiet x Air Purifying Electrolux Flow A3 UV Air Purifier with UV-C light for filters, sleep mode, small, deodorizing, 15 tatami mats (approx. 260 sq ft) FA31-202GN ・Condition: Please understand that this is a used item. I purchased it from Japanet Takata several years ago, used it for several years, and am now selling it because I no longer need it. Power on, fan speed adjustment, and sleep mode are all functional. The filter has been used for a long time, so it may be better to replace it.