Like any good detective, this Shark vacuum is always one step ahead. With its 3 deep-cleaning technologies, it detects hidden dirt, identifies edges and adjusts to your floor type automatically. The auto-empty base holds dirt and debris for up to 45 days and charges the vac after every use. Plus, the Anti-Allergen Complete Seal captures 99.9% of dust and allergens and traps them inside. Good news if you suffer from sniffles. And the PowerFins brush roll gets deep into your carpets to agitate dirt. You get a better clean first time, so you don't have to go over the same spot twice.