The SharkPOWERDETECT upright vacuum has the most powerful suction and the most advanced cleaning technology to deliver the best overall cleaning of any vacuum*. It features Shark~s most advanced cleaning technologies in the new DuoClean Detect nozzle which includes a network of proprietary Intelli-Sense sensors that automatically sense and react to hidden dirt by boosting suction and brushroll speed when you need it most across floor type, corners, edges, and it even detects direction for powerful suction in forward and reverse to grip-& capture- dirt, debris & hair. Large piles, fine dust, and & pet hair are no match for DuoClean Detect. For above-floor cleaning, you can Lift Away the detachable pod and take your cleaning to stairs, furniture, windowsills, and more. In addition, when you lift away the pod, you transform your vacuum into a stick, for easy motorized cleaning under furniture. Shark~s Odor Neutralizer Technology guards against bad odors inside your vacuum to help freshen your home. Plus, Anti-Allergen Complete Seal with HEPA filtration seals and traps 99.99%** of dust, dander, and allergens inside of the vacuum, and out of the air you breathe. *Based on a geomean of combined tests -IEC62885-2 Sec 5.3 FWD, IEC62885-2 Sec 5.3 REV, IEC62885-2 Sec 5.5 FWD, IEC62885 Sec 5.5 REV vs. upright market. **Based on ASTM F1977, down to .3 microns. Allergens refers to non-living matters.