The Shark Detect Pro Cordless Stick has 4 ultra-intelligent deep cleaning technologies that detect & react to messes in your home. It automatically boosts power on hidden dirt increases suction on edges and corners optimizes cleaning based on surface type and illuminates hidden debris all combining to provide up to 50% better dirt pickup(3). Odour Neutraliser Technology guards against bad odours. After every clean the Auto-Empty System charges and empties your vacuum capturing and trapping 99.97%(2) of dust and allergens with True HEPA filtration Disclaimers: (1) In ECO mode tested at the hand vac.(2) Based on ASTMF1977 down to .3 Microns Allergens refers to non-living matter.(3) Based on ASTMF608 Eco vs. Boost (4) Based on third-party plume testing while emptying vs. manual empty.