The Shark PowerDetect Clean Empty (IP3251) system is the ultimate cordless solution for powerful intelligent whole-home deep cleaning. It features an Auto-Empty system that charges empties your vacuum after every clean reducing dust exposure by 1000x vs. traditional emptying. PowerDetect is powered by Shark’s most powerful cordless suction PLUS a redesigned DuoClean Detect nozzle with dirt-detecting intelligence and multi-directional cleaning making it THE BEST debris cleaning of ANY cordless vacuum. While most vacuums push around debris in the back-stroke the redesigned DuoClean Detect nozzle eliminates this problem by capturing more dirt dust and debris in forward AND reverse for faster cleaning. PowerDetect has an impressive 70min of runtime§§ and a MultiFlex wand for effortless under-furniture reach and flex storage. (Based on third party-plume testing while emptying vs. Shark Navigator upright manual empty US/CAN NV130)(Based on ASTM F558 measured at the hand vacuum tested in Boost mode)(†Based on Geomean of ASTMF2607 and IEC62885-2 (5.3 5.5) vs cordless market)( vs. original DuoClean nozzle)( §vs. Shark Stratos IZ862H)( §§measured at the handvac in ECO mode)