Unlike traditional dusters, which often just shift dust around the house without ever getting rid of it, this professional-quality duster attracts house dust and allergens, holding them like a magnet until they are sucked cleanly into the filter of the powerful vacuum unit. The fibers of the 22-inch Australian lambswool duster hold the dust through a combination of electrostatic action and natural lanolin oil. After use, simply insert the duster into the rechargeable cordless vacuum. The powerful 2-stage vacuum filtration system removes 99.97% of the accumulated dust and allergens, down to a width of 0.3 microns, leaving the duster clean and ready for re-use in just 8 seconds. Solving the problem of dust recirculation during cleaning, this system is especially useful for people with dust allergies, who are looking for a way to permanently remove dust from their home. Cordless convenience allows the vacuum unit to be carried from room to room, while a single charge enables it to clean the duster over 50 times. The vacuum unit's filters are reusable and very easy to clean. Runs on 6 rechargeable NiCad batteries (included). 20 1?2" H x 6" W x 6" L. (7 lbs.)