DESC: Space-saving design. No need to find a shelf or table for placement, and no cords to hassle with. Just plug it directly into the wall outlet and that's it! The XJ-202 circulates air silently and electronically, without moving parts. Pollutants are given a negative charge, and are then magnetically attracted to the stainless steel blades. When dirty, just wipe the blades clean and continue to reuse. It's that easy. Negative ions have proven to even in government studies to effectively neutralize airborne dust and bacteria. Due to their ability to circulate throughout the room, they can remove pollutants from the air, even if they do not find their way into the air purifier. In addition to purifying your air, the XJ-202 also serves as a night light. Plug it into the bathroom to provide a little illumination during a late night visit, or plug it into your child's room to help them rest easy at night.