The Oxygen3 by Electrolux captures 99.97% of allergens, dust and particulates while insuring that they're not propelled back into the air due to the combination of its HEPA Filtration and patented Microseal ™ Technology. Powerful 12-amp motor with a sensor system that automatically monitors the cleaning performance to ensure peak efficiency. Fingertip controls allow for electronic height adjustment, floor type and carpet height. Light indicators also let you know when it's time to change the bag or filter. Complete set of on baord tools store behind door on back. Automatic 25 ft. cord rewind and ergonomic handle take strain out of vacuuming. Two-year manufacture warranty.