The Shark POWERDETECT upright vacuum combines the most powerful suction, ultra-powerful hair pick-up and Shark's most advanced cleaning technology to deliver the best overall cleaning of any vacuum*. It features the new DuoClean Detect nozzle which includes two brushrolls and a network of proprietary 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 and capture more dirt, debris & hair than the original DuoClean nozzle. Large piles, fine dust, and & pet hair are no match for DuoClean Detect. 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. 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. *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.