Shark APEX DuoClean Powered Lift-Away Upright Vacuum (AX951) Shark APEX combines Duo Clean, Powered Lift-Away and APEX technologies making this our ultimate full-sized cleaning experience. Powered in Upright Mode Maneuvers easily with dynamic swivel steering, so cleaning is done quickly and conveniently. Powered Cleaner Head in Lift-Away Mode Extends the reach of the motorized cleaner head, so getting under furniture is easy and hassle-free. Under Appliance Wand Extends to access areas under hard-to-move appliances and furniture. Flip extension upside down to also clean underside of appliances.Advanced Anti-Allergen Complete Seal Emits 10X fewer particles than HEPA standards require, while picking up dust, pollen, and pet hair. Active Glide Smooth maneuverability on floors and carpets while maintaining power suction, so it goes anywhere. Noise Reduction Expertly tuned to reduce noise and soften pitch, so you’re not covering your ears (or scaring your pets).