WBM Smart offers an Elegant and graceful style Air Purifier for your home, you can put it anywhere. It removes airborne pollutants such as dust, plant pollen, mold spores, fungi, pet dander, etc. Purifies the air with 3-in-1 Composite Filter — Pre-filter, TRUE HEPA Filter, & Activated Carbon Filter. Clean Air Delivery Rate (CADR) is 68m*/h (40CFM). Particulate matter above 0.3 pm can be filtered out, with the once-through filtration efficiency greater than or equal to 99.5%. 3-Speed Settings modes provide options for various conditions. It is recommended to turn to the lowest speed at night, with 15w of minimum power consumption. Whisper-quiet operation is good for sound sleep.